From 8daa83a594a2e98f39d764422bfbdbc62c9efd44 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 19:20:00 +0200 Subject: Adding upstream version 2:4.20.0+dfsg. Signed-off-by: Daniel Baumann --- pidl/lib/Parse/Pidl/Wireshark/NDR.pm | 1383 ++++++++++++++++++++++++++++++++++ 1 file changed, 1383 insertions(+) create mode 100644 pidl/lib/Parse/Pidl/Wireshark/NDR.pm (limited to 'pidl/lib/Parse/Pidl/Wireshark/NDR.pm') diff --git a/pidl/lib/Parse/Pidl/Wireshark/NDR.pm b/pidl/lib/Parse/Pidl/Wireshark/NDR.pm new file mode 100644 index 0000000..23e8a0f --- /dev/null +++ b/pidl/lib/Parse/Pidl/Wireshark/NDR.pm @@ -0,0 +1,1383 @@ +################################################## +# Wireshark NDR parser generator for IDL structures +# Copyright tridge@samba.org 2000-2003 +# Copyright tpot@samba.org 2001,2005 +# Copyright jelmer@samba.org 2004-2007 +# Portions based on idl2eth.c by Ronnie Sahlberg +# released under the GNU GPL + +=pod + +=head1 NAME + +Parse::Pidl::Wireshark::NDR - Parser generator for Wireshark + +=cut + +package Parse::Pidl::Wireshark::NDR; + +use Exporter; +@ISA = qw(Exporter); +@EXPORT_OK = qw(field2name %res PrintIdl StripPrefixes RegisterInterfaceHandoff register_hf_field CheckUsed ProcessImport ProcessInclude find_type DumpEttList DumpEttDeclaration DumpHfList DumpHfDeclaration DumpFunctionTable register_type register_ett); + +use strict; +use warnings; +use Parse::Pidl qw(error warning); +use Parse::Pidl::Typelist qw(getType); +use Parse::Pidl::Util qw(has_property property_matches make_str); +use Parse::Pidl::NDR qw(ContainsString GetNextLevel); +use Parse::Pidl::Dump qw(DumpType DumpFunction); +use Parse::Pidl::Wireshark::Conformance qw(ReadConformance); +use File::Basename; + +use vars qw($VERSION); +$VERSION = '0.01'; + +my %return_types = (); +my %dissector_used = (); + +my %ptrtype_mappings = ( + "unique" => "NDR_POINTER_UNIQUE", + "ref" => "NDR_POINTER_REF", + "ptr" => "NDR_POINTER_PTR" +); + +sub StripPrefixes($$) +{ + my ($s, $prefixes) = @_; + + foreach (@$prefixes) { + $s =~ s/^$_\_//g; + } + + return $s; +} + +# Convert a IDL structure field name (e.g access_mask) to a prettier +# string like 'Access Mask'. + +sub field2name($) +{ + my($field) = shift; + + $field =~ s/^(_)*//g; # Remove any starting underscores + $field =~ s/_/ /g; # Replace underscores with spaces + $field =~ s/(\w+)/\u$1/g; # Capitalise each word + + return $field; +} + +sub new($) +{ + my ($class) = @_; + my $self = {res => {hdr => "", def => "", code => ""}, tabs => "", cur_fn => undef, + hf_used => {}, ett => [], conformance => undef + + }; + bless($self, $class); +} + +sub pidl_fn_start($$) +{ + my ($self, $fn) = @_; + $self->{cur_fn} = $fn; +} +sub pidl_fn_end($$) +{ + my ($self, $fn) = @_; + die("Inconsistent state: $fn != $self->{cur_fn}") if ($fn ne $self->{cur_fn}); + $self->{cur_fn} = undef; +} + +sub pidl_code($$) +{ + my ($self, $d) = @_; + return if (defined($self->{cur_fn}) and defined($self->{conformance}->{manual}->{$self->{cur_fn}})); + + if ($d) { + $self->{res}->{code} .= $self->{tabs}; + $self->{res}->{code} .= $d; + } + $self->{res}->{code} .="\n"; +} + +sub pidl_hdr($$) { my ($self,$x) = @_; $self->{res}->{hdr} .= "$x\n"; } +sub pidl_def($$) { my ($self,$x) = @_; $self->{res}->{def} .= "$x\n"; } + +sub indent($) +{ + my ($self) = @_; + $self->{tabs} .= "\t"; +} + +sub deindent($) +{ + my ($self) = @_; + $self->{tabs} = substr($self->{tabs}, 0, -1); +} + +sub PrintIdl($$) +{ + my ($self, $idl) = @_; + + foreach (split /\n/, $idl) { + $self->pidl_code("/* IDL: $_ */"); + } + + $self->pidl_code(""); +} + +##################################################################### +# parse the interface definitions +sub Interface($$) +{ + my($self, $interface) = @_; + $self->Const($_,$interface->{NAME}) foreach (@{$interface->{CONSTS}}); + $self->Type($_, $_->{NAME}, $interface->{NAME}) foreach (@{$interface->{TYPES}}); + $self->Function($_,$interface->{NAME}) foreach (@{$interface->{FUNCTIONS}}); +} + +sub Enum($$$$) +{ + my ($self, $e,$name,$ifname) = @_; + my $valsstring = "$ifname\_$name\_vals"; + my $dissectorname = "$ifname\_dissect\_enum\_".StripPrefixes($name, $self->{conformance}->{strip_prefixes}); + + return if (defined($self->{conformance}->{noemit}->{StripPrefixes($name, $self->{conformance}->{strip_prefixes})})); + + foreach (@{$e->{ELEMENTS}}) { + if (/([^=]*)=(.*)/) { + $self->pidl_hdr("#define $1 ($2)"); + } + } + + $self->pidl_hdr("extern const value_string $valsstring\[];"); + $self->pidl_hdr("int $dissectorname(tvbuff_t *tvb _U_, int offset _U_, packet_info *pinfo _U_, proto_tree *tree _U_, dcerpc_info* di _U_, guint8 *drep _U_, int hf_index _U_, g$e->{BASE_TYPE} *param _U_);"); + + $self->pidl_def("const value_string ".$valsstring."[] = {"); + foreach (@{$e->{ELEMENTS}}) { + next unless (/([^=]*)=(.*)/); + $self->pidl_def("\t{ $1, \"$1\" },"); + } + + $self->pidl_def("{ 0, NULL }"); + $self->pidl_def("};"); + + $self->pidl_fn_start($dissectorname); + $self->pidl_code("int"); + $self->pidl_code("$dissectorname(tvbuff_t *tvb _U_, int offset _U_, packet_info *pinfo _U_, proto_tree *tree _U_, dcerpc_info* di _U_, guint8 *drep _U_, int hf_index _U_, g$e->{BASE_TYPE} *param _U_)"); + $self->pidl_code("{"); + $self->indent; + $self->pidl_code("g$e->{BASE_TYPE} parameter=0;"); + $self->pidl_code("if (param) {"); + $self->indent; + $self->pidl_code("parameter = *param;"); + $self->deindent; + $self->pidl_code("}"); + $self->pidl_code("offset = dissect_ndr_$e->{BASE_TYPE}(tvb, offset, pinfo, tree, di, drep, hf_index, ¶meter);"); + $self->pidl_code("if (param) {"); + $self->indent; + $self->pidl_code("*param = parameter;"); + $self->deindent; + $self->pidl_code("}"); + $self->pidl_code("return offset;"); + $self->deindent; + $self->pidl_code("}\n"); + $self->pidl_fn_end($dissectorname); + + my $enum_size = $e->{BASE_TYPE}; + $enum_size =~ s/uint//g; + $self->register_type($name, "offset = $dissectorname(tvb, offset, pinfo, tree, di, drep, \@HF\@, \@PARAM\@);", "FT_UINT$enum_size", "BASE_DEC", "0", "VALS($valsstring)", $enum_size / 8); +} + +sub Pipe($$$$) +{ + my ($self,$e,$name,$ifname) = @_; + error($e->{ORIGINAL}, "Pipe not yet supported"); + return; +} + +sub Bitmap($$$$) +{ + my ($self,$e,$name,$ifname) = @_; + my $dissectorname = "$ifname\_dissect\_bitmap\_".StripPrefixes($name, $self->{conformance}->{strip_prefixes}); + + $self->register_ett("ett_$ifname\_$name"); + + $self->pidl_hdr("int $dissectorname(tvbuff_t *tvb _U_, int offset _U_, packet_info *pinfo _U_, proto_tree *tree _U_, dcerpc_info* di _U_, guint8 *drep _U_, int hf_index _U_, guint32 param _U_);"); + + $self->pidl_fn_start($dissectorname); + $self->pidl_code("int"); + $self->pidl_code("$dissectorname(tvbuff_t *tvb _U_, int offset _U_, packet_info *pinfo _U_, proto_tree *parent_tree _U_, dcerpc_info* di _U_, guint8 *drep _U_, int hf_index _U_, guint32 param _U_)"); + $self->pidl_code("{"); + $self->indent; + $self->pidl_code("proto_item *item = NULL;"); + $self->pidl_code("proto_tree *tree = NULL;"); + $self->pidl_code(""); + + $self->pidl_code("g$e->{BASE_TYPE} flags;"); + if ($e->{ALIGN} > 1) { + $self->pidl_code("ALIGN_TO_$e->{ALIGN}_BYTES;"); + } + + $self->pidl_code(""); + + $self->pidl_code("if (parent_tree) {"); + $self->indent; + $self->pidl_code("item = proto_tree_add_item(parent_tree, hf_index, tvb, offset, $e->{ALIGN}, DREP_ENC_INTEGER(drep));"); + $self->pidl_code("tree = proto_item_add_subtree(item,ett_$ifname\_$name);"); + $self->deindent; + $self->pidl_code("}\n"); + + $self->pidl_code("offset = dissect_ndr_$e->{BASE_TYPE}(tvb, offset, pinfo, tree, di, drep, -1, &flags);"); + + $self->pidl_code("proto_item_append_text(item, \": \");\n"); + $self->pidl_code("if (!flags)"); + $self->pidl_code("\tproto_item_append_text(item, \"(No values set)\");\n"); + + foreach (@{$e->{ELEMENTS}}) { + next unless (/([^ ]*) (.*)/); + my ($en,$ev) = ($1,$2); + my $hf_bitname = "hf_$ifname\_$name\_$en"; + my $filtername = "$ifname\.$name\.$en"; + + $self->{hf_used}->{$hf_bitname} = 1; + + $self->register_hf_field($hf_bitname, field2name($en), $filtername, "FT_BOOLEAN", $e->{ALIGN} * 8, "TFS(&$name\_$en\_tfs)", $ev, ""); + + $self->pidl_def("static const true_false_string $name\_$en\_tfs = {"); + if (defined($self->{conformance}->{tfs}->{$hf_bitname})) { + $self->pidl_def(" $self->{conformance}->{tfs}->{$hf_bitname}->{TRUE_STRING},"); + $self->pidl_def(" $self->{conformance}->{tfs}->{$hf_bitname}->{FALSE_STRING},"); + $self->{conformance}->{tfs}->{$hf_bitname}->{USED} = 1; + } else { + $self->pidl_def(" \"$en is SET\","); + $self->pidl_def(" \"$en is NOT SET\","); + } + $self->pidl_def("};"); + + $self->pidl_code("proto_tree_add_boolean(tree, $hf_bitname, tvb, offset-$e->{ALIGN}, $e->{ALIGN}, flags);"); + $self->pidl_code("if (flags&$ev){"); + $self->pidl_code("\tproto_item_append_text(item, \"$en\");"); + $self->pidl_code("\tif (flags & (~$ev))"); + $self->pidl_code("\t\tproto_item_append_text(item, \", \");"); + $self->pidl_code("}"); + $self->pidl_code("flags&=(~$ev);"); + $self->pidl_code(""); + } + + $self->pidl_code("if (flags) {"); + $self->pidl_code("\tproto_item_append_text(item, \"Unknown bitmap value 0x%x\", flags);"); + $self->pidl_code("}\n"); + $self->pidl_code("return offset;"); + $self->deindent; + $self->pidl_code("}\n"); + $self->pidl_fn_end($dissectorname); + + my $size = $e->{BASE_TYPE}; + $size =~ s/uint//g; + $self->register_type($name, "offset = $dissectorname(tvb, offset, pinfo, tree, di, drep, \@HF\@, \@PARAM\@);", "FT_UINT$size", "BASE_HEX", "0", "NULL", $size/8); +} + +sub ElementLevel($$$$$$$$) +{ + my ($self,$e,$l,$hf,$myname,$pn,$ifname,$param) = @_; + + if (defined($self->{conformance}->{dissectorparams}->{$myname})) { + $param = $self->{conformance}->{dissectorparams}->{$myname}->{PARAM}; + } + + if ($l->{TYPE} eq "POINTER") { + my $type; + if ($l->{LEVEL} eq "TOP") { + $type = "toplevel"; + } elsif ($l->{LEVEL} eq "EMBEDDED") { + $type = "embedded"; + } + $self->pidl_code("offset = dissect_ndr_$type\_pointer(tvb, offset, pinfo, tree, di, drep, $myname\_, $ptrtype_mappings{$l->{POINTER_TYPE}}, \"Pointer to ".field2name(StripPrefixes($e->{NAME}, $self->{conformance}->{strip_prefixes})) . " ($e->{TYPE})\",$hf);"); + } elsif ($l->{TYPE} eq "ARRAY") { + if ($l->{IS_INLINE}) { + error($e->{ORIGINAL}, "Inline arrays not supported"); + } elsif ($l->{IS_FIXED}) { + $self->pidl_code("int i;"); + $self->pidl_code("for (i = 0; i < $l->{SIZE_IS}; i++)"); + $self->pidl_code("\toffset = $myname\_(tvb, offset, pinfo, tree, di, drep);"); + } else { + my $type = ""; + $type .= "c" if ($l->{IS_CONFORMANT}); + $type .= "v" if ($l->{IS_VARYING}); + + unless ($l->{IS_ZERO_TERMINATED}) { + $self->pidl_code("offset = dissect_ndr_u" . $type . "array(tvb, offset, pinfo, tree, di, drep, $myname\_);"); + } else { + my $nl = GetNextLevel($e,$l); + $self->pidl_code("char *data;"); + $self->pidl_code(""); + $self->pidl_code("offset = dissect_ndr_$type" . "string(tvb, offset, pinfo, tree, di, drep, sizeof(g$nl->{DATA_TYPE}), $hf, FALSE, &data);"); + $self->pidl_code("proto_item_append_text(tree, \": %s\", data);"); + } + } + } elsif ($l->{TYPE} eq "DATA") { + if ($l->{DATA_TYPE} eq "string") { + my $bs = 2; # Byte size defaults to that of UCS2 + + + ($bs = 1) if (property_matches($e, "flag", ".*LIBNDR_FLAG_STR_ASCII.*")); + + if (property_matches($e, "flag", ".*LIBNDR_FLAG_STR_SIZE4.*") and property_matches($e, "flag", ".*LIBNDR_FLAG_STR_LEN4.*")) { + $self->pidl_code("char *data;\n"); + $self->pidl_code("offset = dissect_ndr_cvstring(tvb, offset, pinfo, tree, di, drep, $bs, $hf, FALSE, &data);"); + $self->pidl_code("proto_item_append_text(tree, \": %s\", data);"); + } elsif (property_matches($e, "flag", ".*LIBNDR_FLAG_STR_SIZE4.*")) { + $self->pidl_code("offset = dissect_ndr_vstring(tvb, offset, pinfo, tree, di, drep, $bs, $hf, FALSE, NULL);"); + } elsif (property_matches($e, "flag", ".*STR_NULLTERM.*")) { + if ($bs == 2) { + $self->pidl_code("offset = dissect_null_term_wstring(tvb, offset, pinfo, tree, drep, $hf , 0);") + } else { + $self->pidl_code("offset = dissect_null_term_string(tvb, offset, pinfo, tree, drep, $hf , 0);") + } + } else { + warn("Unable to handle string with flags $e->{PROPERTIES}->{flag}"); + } + } elsif ($l->{DATA_TYPE} eq "DATA_BLOB") { + my $remain = 0; + $remain = 1 if (property_matches($e->{ORIGINAL}, "flag", ".*LIBNDR_FLAG_REMAINING.*")); + $self->pidl_code("offset = dissect_ndr_datablob(tvb, offset, pinfo, tree, di, drep, $hf, $remain);"); + } else { + my $call; + + if ($self->{conformance}->{imports}->{$l->{DATA_TYPE}}) { + $call = $self->{conformance}->{imports}->{$l->{DATA_TYPE}}->{DATA}; + $self->{conformance}->{imports}->{$l->{DATA_TYPE}}->{USED} = 1; + } elsif (defined($self->{conformance}->{imports}->{"$pn.$e->{NAME}"})) { + $call = $self->{conformance}->{imports}->{"$pn.$e->{NAME}"}->{DATA}; + $self->{conformance}->{imports}->{"$pn.$e->{NAME}"}->{USED} = 1; + } elsif (defined($self->{conformance}->{types}->{$l->{DATA_TYPE}})) { + $call= $self->{conformance}->{types}->{$l->{DATA_TYPE}}->{DISSECTOR_NAME}; + $self->{conformance}->{types}->{$l->{DATA_TYPE}}->{USED} = 1; + } else { + my $t; + if (ref($l->{DATA_TYPE}) eq "HASH" ) { + $t = "$l->{DATA_TYPE}->{TYPE}_$l->{DATA_TYPE}->{NAME}"; + } else { + $t = $l->{DATA_TYPE}; + } + + $self->pidl_code("offset = $ifname\_dissect_struct_" . $t . "(tvb,offset,pinfo,tree,di,drep,$hf,$param);"); + + return; + } + + $call =~ s/\@HF\@/$hf/g; + $call =~ s/\@PARAM\@/$param/g; + $self->pidl_code($call); + } + } elsif ($_->{TYPE} eq "SUBCONTEXT") { + my $varswitch; + if (has_property($e, "switch_is")) { + $varswitch = $e->{PROPERTIES}->{switch_is}; + } + my $num_bits = ($l->{HEADER_SIZE}*8); + my $hf2 = $self->register_hf_field($hf."_", "Subcontext length", "$ifname.$pn.$_->{NAME}subcontext", "FT_UINT$num_bits", "BASE_HEX", "NULL", 0, ""); + $num_bits = 3264 if ($num_bits == 32); + $self->{hf_used}->{$hf2} = 1; + $self->pidl_code("guint$num_bits size;"); + $self->pidl_code("int conformant = di->conformant_run;"); + $self->pidl_code("tvbuff_t *subtvb;"); + $self->pidl_code(""); + # We need to be able to dissect the length of the context in every case + # and conformant run skips the dissections of scalars ... + $self->pidl_code("if (!conformant) {"); + $self->indent; + $self->pidl_code("guint32 saved_flags = di->call_data->flags;"); + $self->pidl_code("offset = dissect_ndr_uint$num_bits(tvb, offset, pinfo, tree, di, drep, $hf2, &size);"); + # This is a subcontext, there is normally no such thing as + # 64 bit NDR is subcontext so we clear the flag so that we can + # continue to dissect handmarshalled stuff with pidl + $self->pidl_code("di->call_data->flags &= ~DCERPC_IS_NDR64;"); + + $self->pidl_code("subtvb = tvb_new_subset(tvb, offset, (const gint)size, -1);"); + if ($param ne 0) { + $self->pidl_code("$myname\_(subtvb, 0, pinfo, tree, di, drep, $param);"); + } else { + $self->pidl_code("$myname\_(subtvb, 0, pinfo, tree, di, drep);"); + } + $self->pidl_code("offset += (int)size;"); + $self->pidl_code("di->call_data->flags = saved_flags;"); + $self->deindent; + $self->pidl_code("}"); + } elsif ($_->{TYPE} eq "PIPE") { + error($e->{ORIGINAL}, "Type PIPE not yet supported"); + } else { + die("Unknown type `$_->{TYPE}'"); + } +} + +sub SwitchType($$;$) +{ + my ($e, $type, $nodiscriminant) = @_; + + my $switch_dt = getType($type); + my $switch_type = undef; + if ($switch_dt->{DATA}->{TYPE} eq "ENUM") { + $switch_type = Parse::Pidl::Typelist::enum_type_fn($switch_dt->{DATA}); + } elsif ($switch_dt->{DATA}->{TYPE} eq "BITMAP") { + $switch_type = Parse::Pidl::Typelist::bitmap_type_fn($switch_dt->{DATA}); + } elsif ($switch_dt->{DATA}->{TYPE} eq "SCALAR") { + if (defined $e->{SWITCH_TYPE}) { + $switch_type = "$e->{SWITCH_TYPE}"; + } else { + $switch_type = "$switch_dt->{DATA}->{NAME}"; + } + } elsif (not defined $e->{SWITCH_TYPE}) { + $switch_type = $nodiscriminant; + } + + return $switch_type +} + +sub Element($$$$$$) +{ + my ($self,$e,$pn,$ifname,$isoruseswitch,%switchvars) = @_; + + my $dissectorname = "$ifname\_dissect\_element\_".StripPrefixes($pn, $self->{conformance}->{strip_prefixes})."\_".StripPrefixes($e->{NAME}, $self->{conformance}->{strip_prefixes}); + + my ($call_code, $moreparam); + my $param = 0; + if (defined $isoruseswitch) { + my $type = $isoruseswitch->[0]; + my $name = $isoruseswitch->[1]; + + my $switch_dt = getType($type); + my $switch_raw_type = SwitchType($e, $type, "uint32"); + if (not defined($switch_raw_type)) { + die("Unknown type[$type]\n"); + } + my $switch_type = "g${switch_raw_type}"; + + if ($name ne "") { + $moreparam = ", $switch_type *".$name; + } else { + $moreparam = ""; + } + if (($e->{PROPERTIES}->{switch_is} eq "") && ($switchvars{$name}) && + #not a "native" type + (!($type =~ /^uint(8|16|1632|32|3264|64)/))) { + $param = $name; + } elsif ( $switch_dt->{DATA}->{TYPE} eq "ENUM") { + $param = $name; + } elsif ($name ne "") { + $param = "*".$name; + } + + if ($name ne "") { + $call_code = "offset = $dissectorname(tvb, offset, pinfo, tree, di, drep, &$name);"; + } else { + $call_code = "offset = $dissectorname(tvb, offset, pinfo, tree, di, drep);"; + } + } else { + $moreparam = ""; + $call_code = "offset = $dissectorname(tvb, offset, pinfo, tree, di, drep);"; + } + + + my $type = $self->find_type($e->{TYPE}); + + if (not defined($type)) { + # default settings + $type = { + MASK => 0, + VALSSTRING => "NULL", + FT_TYPE => "FT_NONE", + BASE_TYPE => "BASE_NONE" + }; + } + + if (ContainsString($e)) { + $type = { + MASK => 0, + VALSSTRING => "NULL", + FT_TYPE => "FT_STRING", + BASE_TYPE => "BASE_NONE" + }; + } + if (property_matches($e, "flag", ".*LIBNDR_FLAG_ALIGN.*")) { + my $align_flag = $e->{PROPERTIES}->{flag}; + if ($align_flag =~ m/LIBNDR_FLAG_ALIGN(\d+)/) { + $call_code = "ALIGN_TO_$1_BYTES; ".$call_code; + } + } + + my $hf = $self->register_hf_field("hf_$ifname\_$pn\_$e->{NAME}", field2name($e->{NAME}), "$ifname.$pn.$e->{NAME}", $type->{FT_TYPE}, $type->{BASE_TYPE}, $type->{VALSSTRING}, $type->{MASK}, ""); + $self->{hf_used}->{$hf} = 1; + + my $eltname = StripPrefixes($pn, $self->{conformance}->{strip_prefixes}) . ".$e->{NAME}"; + if (defined($self->{conformance}->{noemit}->{$eltname})) { + return $call_code; + } + + my $add = ""; + + my $oldparam = undef; + foreach (@{$e->{LEVELS}}) { + if (defined $_->{SWITCH_IS}) { + $oldparam = $param; + if (($param ne "0") && (!($param =~ /\*/))) { + $param = "*$param"; + } + } + next if ($_->{TYPE} eq "SWITCH"); + next if (defined($self->{conformance}->{noemit}->{"$dissectorname$add"})); + $self->pidl_def("static int $dissectorname$add(tvbuff_t *tvb _U_, int offset _U_, packet_info *pinfo _U_, proto_tree *tree _U_, dcerpc_info* di _U_, guint8 *drep _U_$moreparam);"); + $self->pidl_fn_start("$dissectorname$add"); + $self->pidl_code("static int"); + $self->pidl_code("$dissectorname$add(tvbuff_t *tvb _U_, int offset _U_, packet_info *pinfo _U_, proto_tree *tree _U_, dcerpc_info* di _U_, guint8 *drep _U_$moreparam)"); + $self->pidl_code("{"); + $self->indent; + + $self->ElementLevel($e,$_,$hf,$dissectorname.$add,$pn,$ifname,$param); + if (defined $oldparam) { + $param = $oldparam; + } + + $self->pidl_code(""); + $self->pidl_code("return offset;"); + $self->deindent; + $self->pidl_code("}\n"); + $self->pidl_fn_end("$dissectorname$add"); + $add.="_"; + last if ($_->{TYPE} eq "ARRAY" and $_->{IS_ZERO_TERMINATED}); + } + + return $call_code; +} + +sub Function($$$) +{ + my ($self, $fn,$ifname) = @_; + + my %dissectornames; + + foreach (@{$fn->{ELEMENTS}}) { + $dissectornames{$_->{NAME}} = $self->Element($_, $fn->{NAME}, $ifname, undef, undef) if not defined($dissectornames{$_->{NAME}}); + } + + my $fn_name = $_->{NAME}; + $fn_name =~ s/^${ifname}_//; + + $self->PrintIdl(DumpFunction($fn->{ORIGINAL})); + $self->pidl_fn_start("$ifname\_dissect\_$fn_name\_response"); + $self->pidl_code("static int"); + $self->pidl_code("$ifname\_dissect\_${fn_name}_response(tvbuff_t *tvb _U_, int offset _U_, packet_info *pinfo _U_, proto_tree *tree _U_, dcerpc_info* di _U_, guint8 *drep _U_)"); + $self->pidl_code("{"); + $self->indent; + if ( not defined($fn->{RETURN_TYPE})) { + } elsif ($fn->{RETURN_TYPE} eq "NTSTATUS" or $fn->{RETURN_TYPE} eq "WERROR" or $fn->{RETURN_TYPE} eq "HRESULT") + { + $self->pidl_code("guint32 status;\n"); + } elsif (my $type = getType($fn->{RETURN_TYPE})) { + if ($type->{DATA}->{TYPE} eq "ENUM") { + $self->pidl_code("g".Parse::Pidl::Typelist::enum_type_fn($type->{DATA}) . " status;\n"); + } elsif ($type->{DATA}->{TYPE} eq "SCALAR") { + $self->pidl_code("g$fn->{RETURN_TYPE} status;\n"); + } else { + error($fn, "return type `$fn->{RETURN_TYPE}' not yet supported"); + } + } else { + error($fn, "unknown return type `$fn->{RETURN_TYPE}'"); + } + + $self->pidl_code("di->dcerpc_procedure_name=\"${fn_name}\";"); + foreach (@{$fn->{ELEMENTS}}) { + if (grep(/out/,@{$_->{DIRECTION}})) { + $self->pidl_code("$dissectornames{$_->{NAME}}"); + $self->pidl_code("offset = dissect_deferred_pointers(pinfo, tvb, offset, di, drep);"); + $self->pidl_code(""); + } + } + + if (not defined($fn->{RETURN_TYPE})) { + } elsif ($fn->{RETURN_TYPE} eq "NTSTATUS") { + $self->pidl_code("offset = dissect_ntstatus(tvb, offset, pinfo, tree, di, drep, hf\_$ifname\_status, &status);\n"); + $self->pidl_code("if (status != 0)"); + $self->pidl_code("\tcol_append_fstr(pinfo->cinfo, COL_INFO, \", Error: %s\", val_to_str(status, NT_errors, \"Unknown NT status 0x%08x\"));\n"); + $return_types{$ifname}->{"status"} = ["NTSTATUS", "NT Error"]; + } elsif ($fn->{RETURN_TYPE} eq "WERROR") { + $self->pidl_code("offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf\_$ifname\_werror, &status);\n"); + $self->pidl_code("if (status != 0)"); + $self->pidl_code("\tcol_append_fstr(pinfo->cinfo, COL_INFO, \", Error: %s\", val_to_str(status, WERR_errors, \"Unknown DOS error 0x%08x\"));\n"); + + $return_types{$ifname}->{"werror"} = ["WERROR", "Windows Error"]; + } elsif ($fn->{RETURN_TYPE} eq "HRESULT") { + $self->pidl_code("offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf\_$ifname\_hresult, &status);\n"); + $self->pidl_code("if (status != 0)"); + $self->pidl_code("\tcol_append_fstr(pinfo->cinfo, COL_INFO, \", Error: %s\", val_to_str(status, HRES_errors, \"Unknown HRES error 0x%08x\"));\n"); + $return_types{$ifname}->{"hresult"} = ["HRESULT", "HRES Windows Error"]; + } elsif (my $type = getType($fn->{RETURN_TYPE})) { + if ($type->{DATA}->{TYPE} eq "ENUM") { + my $return_type = "g".Parse::Pidl::Typelist::enum_type_fn($type->{DATA}); + my $return_dissect = "dissect_ndr_" .Parse::Pidl::Typelist::enum_type_fn($type->{DATA}); + + $self->pidl_code("offset = $return_dissect(tvb, offset, pinfo, tree, di, drep, hf\_$ifname\_$fn->{RETURN_TYPE}_status, &status);"); + $self->pidl_code("if (status != 0)"); + $self->pidl_code("\tcol_append_fstr(pinfo->cinfo, COL_INFO, \", Status: %s\", val_to_str(status, $ifname\_$fn->{RETURN_TYPE}\_vals, \"Unknown " . $fn->{RETURN_TYPE} . " error 0x%08x\"));\n"); + $return_types{$ifname}->{$fn->{RETURN_TYPE}."_status"} = [$fn->{RETURN_TYPE}, $fn->{RETURN_TYPE}]; + } elsif ($type->{DATA}->{TYPE} eq "SCALAR") { + $self->pidl_code("offset = dissect_ndr_$fn->{RETURN_TYPE}(tvb, offset, pinfo, tree, di, drep, hf\_$ifname\_$fn->{RETURN_TYPE}_status, &status);"); + $self->pidl_code("if (status != 0)"); + $self->pidl_code("\tcol_append_fstr(pinfo->cinfo, COL_INFO, \", Status: %d\", status);\n"); + $return_types{$ifname}->{$fn->{RETURN_TYPE}."_status"} = [$fn->{RETURN_TYPE}, $fn->{RETURN_TYPE}]; + } + } + + $self->pidl_code("return offset;"); + $self->deindent; + $self->pidl_code("}\n"); + $self->pidl_fn_end("$ifname\_dissect\_$fn_name\_response"); + + $self->pidl_fn_start("$ifname\_dissect\_$fn_name\_request"); + $self->pidl_code("static int"); + $self->pidl_code("$ifname\_dissect\_${fn_name}_request(tvbuff_t *tvb _U_, int offset _U_, packet_info *pinfo _U_, proto_tree *tree _U_, dcerpc_info* di _U_, guint8 *drep _U_)"); + $self->pidl_code("{"); + $self->indent; + $self->pidl_code("di->dcerpc_procedure_name=\"${fn_name}\";"); + foreach (@{$fn->{ELEMENTS}}) { + if (grep(/in/,@{$_->{DIRECTION}})) { + $self->pidl_code("$dissectornames{$_->{NAME}}"); + $self->pidl_code("offset = dissect_deferred_pointers(pinfo, tvb, offset, di, drep);"); + } + + } + + $self->pidl_code("return offset;"); + $self->deindent; + $self->pidl_code("}\n"); + $self->pidl_fn_end("$ifname\_dissect\_$fn_name\_request"); +} + +sub Struct($$$$) +{ + my ($self,$e,$name,$ifname) = @_; + my $dissectorname = "$ifname\_dissect\_struct\_".StripPrefixes($name, $self->{conformance}->{strip_prefixes}); + + return if (defined($self->{conformance}->{noemit}->{StripPrefixes($name, $self->{conformance}->{strip_prefixes})})); + + $self->register_ett("ett_$ifname\_$name"); + + my $res = ""; + my $varswitchs = {}; + # will contain the switch var declaration; + my $vars = []; + my %switch_hash; + foreach (@{$e->{ELEMENTS}}) { + if (has_property($_, "switch_is")) { + $varswitchs->{$_->{PROPERTIES}->{switch_is}} = []; + $switch_hash{ $_->{PROPERTIES}->{switch_is}} = $_->{PROPERTIES}->{switch_is}; + } + } + foreach (@{$e->{ELEMENTS}}) { + my $switch_info = undef; + + my $v = $_->{NAME}; + if (scalar(grep {/^$v$/} keys(%$varswitchs)) == 1) { + # This element is one of the switch attribute + my $switch_raw_type = SwitchType($e, $_->{TYPE}, "uint32"); + if (not defined($switch_raw_type)) { + die("Unknown type[$_->{TYPE}]\n"); + } + my $switch_type = "g${switch_raw_type}"; + + if ($switch_type ne "") { + push @$vars, "$switch_type $v = 0;"; + } + $switch_info = [ $_->{TYPE}, $v ]; + $varswitchs->{$v} = $switch_info; + } + + if (has_property($_, "switch_is")) { + my $varswitch = $_->{PROPERTIES}->{switch_is}; + $switch_info = $varswitchs->{$varswitch}; + } + + $res.="\t".$self->Element($_, $name, $ifname, $switch_info, %switch_hash)."\n\n"; + } + + my $doalign = undef; + if ($e->{ALIGN} > 1 and not property_matches($e, "flag", ".*LIBNDR_FLAG_NOALIGN.*")) { + $doalign = 1; + } elsif (property_matches($e, "flag", ".*LIBNDR_FLAG_NOALIGN.*")) { + $doalign = 0; + } + + $self->pidl_hdr("int $dissectorname(tvbuff_t *tvb _U_, int offset _U_, packet_info *pinfo _U_, proto_tree *parent_tree _U_, dcerpc_info* di _U_, guint8 *drep _U_, int hf_index _U_, guint32 param _U_);"); + + $self->pidl_fn_start($dissectorname); + $self->pidl_code("int"); + $self->pidl_code("$dissectorname(tvbuff_t *tvb _U_, int offset _U_, packet_info *pinfo _U_, proto_tree *parent_tree _U_, dcerpc_info* di _U_, guint8 *drep _U_, int hf_index _U_, guint32 param _U_)"); + $self->pidl_code("{"); + $self->indent; + $self->pidl_code($_) foreach (@$vars); + $self->pidl_code("proto_item *item = NULL;"); + if($res) { + $self->pidl_code("proto_tree *tree = NULL;"); + } + if (defined($doalign) and $doalign == 0) { + $self->pidl_code("gboolean oldalign = di->no_align;"); + } + $self->pidl_code("int old_offset;"); + $self->pidl_code(""); + + if (defined($doalign)) { + if ($doalign == 1) { + $self->pidl_code("ALIGN_TO_$e->{ALIGN}_BYTES;"); + } + if ($doalign == 0) { + $self->pidl_code("di->no_align = TRUE;"); + } + $self->pidl_code(""); + } + + $self->pidl_code("old_offset = offset;"); + $self->pidl_code(""); + $self->pidl_code("if (parent_tree) {"); + $self->indent; + $self->pidl_code("item = proto_tree_add_item(parent_tree, hf_index, tvb, offset, -1, ENC_NA);"); + if($res) { + $self->pidl_code("tree = proto_item_add_subtree(item, ett_$ifname\_$name);"); + } + $self->deindent; + $self->pidl_code("}"); + $self->pidl_code(""); + + $self->deindent; + $self->pidl_code("$res"); + $self->indent; + + $self->pidl_code("proto_item_set_len(item, offset-old_offset);\n"); + if (defined($doalign) and $doalign == 1) { + $self->pidl_code(""); + $self->pidl_code("if (di->call_data->flags & DCERPC_IS_NDR64) {"); + $self->indent; + $self->pidl_code("ALIGN_TO_$e->{ALIGN}_BYTES;"); + $self->deindent; + $self->pidl_code("}"); + } + if (defined($doalign) and $doalign == 0) { + $self->pidl_code(""); + $self->pidl_code("di->no_align = oldalign;"); + } + $self->pidl_code(""); + $self->pidl_code("return offset;"); + $self->deindent; + $self->pidl_code("}\n"); + $self->pidl_fn_end($dissectorname); + + $self->register_type($name, "offset = $dissectorname(tvb,offset,pinfo,tree,di,drep,\@HF\@,\@PARAM\@);", "FT_NONE", "BASE_NONE", 0, "NULL", 0); +} + +sub Union($$$$) +{ + my ($self,$e,$name,$ifname) = @_; + + my $dissectorname = "$ifname\_dissect_".StripPrefixes($name, $self->{conformance}->{strip_prefixes}); + + return if (defined($self->{conformance}->{noemit}->{StripPrefixes($name, $self->{conformance}->{strip_prefixes})})); + + $self->register_ett("ett_$ifname\_$name"); + + my $res = ""; + foreach (@{$e->{ELEMENTS}}) { + $res.="\n\t\t$_->{CASE}:\n"; + if ($_->{TYPE} ne "EMPTY") { + $res.="\t\t\t".$self->Element($_, $name, $ifname, undef, undef)."\n"; + } + $res.="\t\tbreak;\n"; + } + + my $switch_type = undef; + my $switch_dissect = undef; + my $switch_raw_type = SwitchType($e, $e->{SWITCH_TYPE}); + if (defined($switch_raw_type)) { + $switch_type = "g${switch_raw_type}"; + $switch_dissect = "dissect_ndr_${switch_raw_type}"; + } + + $self->pidl_fn_start($dissectorname); + $self->pidl_code("static int"); + $self->pidl_code("$dissectorname(tvbuff_t *tvb _U_, int offset _U_, packet_info *pinfo _U_, proto_tree *parent_tree _U_, dcerpc_info* di _U_, guint8 *drep _U_, int hf_index _U_, guint32 param _U_)"); + $self->pidl_code("{"); + $self->indent; + $self->pidl_code("proto_item *item = NULL;"); + $self->pidl_code("proto_tree *tree = NULL;"); + $self->pidl_code("int old_offset;"); + if (!defined $switch_type) { + $self->pidl_code("guint32 level = param;"); + } else { + $self->pidl_code("$switch_type level;"); + } + $self->pidl_code(""); + + $self->pidl_code("old_offset = offset;"); + $self->pidl_code("if (parent_tree) {"); + $self->indent; + $self->pidl_code("tree = proto_tree_add_subtree(parent_tree, tvb, offset, -1, ett_$ifname\_$name, &item, \"$name\");"); + $self->deindent; + $self->pidl_code("}"); + + $self->pidl_code(""); + + if (defined $switch_type) { + $self->pidl_code("offset = $switch_dissect(tvb, offset, pinfo, tree, di, drep, hf_index, &level);"); + + if ($e->{ALIGN} > 1) { + $self->pidl_code("ALIGN_TO_$e->{ALIGN}_BYTES;"); + $self->pidl_code(""); + } + } + + + $self->pidl_code("switch(level) {$res\t}"); + $self->pidl_code("proto_item_set_len(item, offset-old_offset);\n"); + $self->pidl_code(""); + + $self->pidl_code("return offset;"); + $self->deindent; + $self->pidl_code("}"); + $self->pidl_fn_end($dissectorname); + + $self->register_type($name, "offset = $dissectorname(tvb, offset, pinfo, tree, di, drep, \@HF\@, \@PARAM\@);", "FT_NONE", "BASE_NONE", 0, "NULL", 0); +} + +sub Const($$$) +{ + my ($self,$const,$ifname) = @_; + + if (!defined($const->{ARRAY_LEN}[0])) { + $self->pidl_hdr("#define $const->{NAME}\t( $const->{VALUE} )\n"); + } else { + $self->pidl_hdr("#define $const->{NAME}\t $const->{VALUE}\n"); + } +} + +sub Typedef($$$$) +{ + my ($self,$e,$name,$ifname) = @_; + + $self->Type($e->{DATA}, $name, $ifname); +} + +sub Type($$$$) +{ + my ($self, $e, $name, $ifname) = @_; + + $self->PrintIdl(DumpType($e->{ORIGINAL})); + { + ENUM => \&Enum, + STRUCT => \&Struct, + UNION => \&Union, + BITMAP => \&Bitmap, + TYPEDEF => \&Typedef, + PIPE => \&Pipe + }->{$e->{TYPE}}->($self, $e, $name, $ifname); +} + +sub RegisterInterface($$) +{ + my ($self, $x) = @_; + + $self->pidl_fn_start("proto_register_dcerpc_$x->{NAME}"); + $self->pidl_code("void proto_register_dcerpc_$x->{NAME}(void)"); + $self->pidl_code("{"); + $self->indent; + + $self->{res}->{headers} .= "void proto_register_dcerpc_$x->{NAME}(void);\n"; + + $self->{res}->{code}.=$self->DumpHfList()."\n"; + $self->{res}->{code}.="\n".DumpEttList($self->{ett})."\n"; + + if (defined($x->{UUID})) { + # These can be changed to non-pidl_code names if the old + # dissectors in epan/dissectors are deleted. + + my $name = uc($x->{NAME}) . " (pidl)"; + my $short_name = uc($x->{NAME}); + my $filter_name = $x->{NAME}; + + if (has_property($x, "helpstring")) { + $name = $x->{PROPERTIES}->{helpstring}; + } + + if (defined($self->{conformance}->{protocols}->{$x->{NAME}})) { + $short_name = $self->{conformance}->{protocols}->{$x->{NAME}}->{SHORTNAME}; + $name = $self->{conformance}->{protocols}->{$x->{NAME}}->{LONGNAME}; + $filter_name = $self->{conformance}->{protocols}->{$x->{NAME}}->{FILTERNAME}; + } + + $self->pidl_code("proto_dcerpc_$x->{NAME} = proto_register_protocol(".make_str($name).", ".make_str($short_name).", ".make_str($filter_name).");"); + + $self->pidl_code("proto_register_field_array(proto_dcerpc_$x->{NAME}, hf, array_length (hf));"); + $self->pidl_code("proto_register_subtree_array(ett, array_length(ett));"); + } else { + $self->pidl_code("proto_dcerpc = proto_get_id_by_filter_name(\"dcerpc\");"); + $self->pidl_code("proto_register_field_array(proto_dcerpc, hf, array_length(hf));"); + $self->pidl_code("proto_register_subtree_array(ett, array_length(ett));"); + } + + $self->deindent; + $self->pidl_code("}\n"); + $self->pidl_fn_end("proto_register_dcerpc_$x->{NAME}"); +} + +sub RegisterInterfaceHandoff($$) +{ + my ($self,$x) = @_; + + if (defined($x->{UUID})) { + $self->pidl_fn_start("proto_reg_handoff_dcerpc_$x->{NAME}"); + $self->pidl_code("void proto_reg_handoff_dcerpc_$x->{NAME}(void)"); + $self->pidl_code("{"); + $self->indent; + $self->pidl_code("dcerpc_init_uuid(proto_dcerpc_$x->{NAME}, ett_dcerpc_$x->{NAME},"); + $self->pidl_code("\t&uuid_dcerpc_$x->{NAME}, ver_dcerpc_$x->{NAME},"); + $self->pidl_code("\t$x->{NAME}_dissectors, hf_$x->{NAME}_opnum);"); + $self->deindent; + $self->pidl_code("}"); + $self->pidl_fn_end("proto_reg_handoff_dcerpc_$x->{NAME}"); + + $self->{res}->{headers} .= "void proto_reg_handoff_dcerpc_$x->{NAME}(void);\n"; + + $self->{hf_used}->{"hf_$x->{NAME}_opnum"} = 1; + } +} + +sub ProcessInclude +{ + my $self = shift; + my @includes = @_; + foreach (@includes) { + $self->pidl_hdr("#include \"$_\""); + } + $self->pidl_hdr(""); +} + +sub ProcessImport +{ + my $self = shift; + my @imports = @_; + foreach (@imports) { + next if($_ eq "security"); + s/^\"//; + s/\.idl"?$//; + $self->pidl_hdr("#include \"packet-dcerpc-$_\.h\""); + } + $self->pidl_hdr(""); +} + +sub ProcessInterface($$) +{ + my ($self, $x) = @_; + + push(@{$self->{conformance}->{strip_prefixes}}, $x->{NAME}); + + my $define = "__PACKET_DCERPC_" . uc($_->{NAME}) . "_H"; + $self->pidl_hdr("#ifndef $define"); + $self->pidl_hdr("#define $define"); + $self->pidl_hdr(""); + + $self->pidl_def("static gint proto_dcerpc_$x->{NAME} = -1;"); + $self->register_ett("ett_dcerpc_$x->{NAME}"); + $self->register_hf_field("hf_$x->{NAME}_opnum", "Operation", "$x->{NAME}.opnum", "FT_UINT16", "BASE_DEC", "NULL", 0, ""); + + if (defined($x->{UUID})) { + my $if_uuid = $x->{UUID}; + + $self->pidl_def("/* Version information */\n\n"); + + $self->pidl_def("static e_guid_t uuid_dcerpc_$x->{NAME} = {"); + $self->pidl_def("\t0x" . substr($if_uuid, 1, 8) + . ", 0x" . substr($if_uuid, 10, 4) + . ", 0x" . substr($if_uuid, 15, 4) . ","); + $self->pidl_def("\t{ 0x" . substr($if_uuid, 20, 2) + . ", 0x" . substr($if_uuid, 22, 2) + . ", 0x" . substr($if_uuid, 25, 2) + . ", 0x" . substr($if_uuid, 27, 2) + . ", 0x" . substr($if_uuid, 29, 2) + . ", 0x" . substr($if_uuid, 31, 2) + . ", 0x" . substr($if_uuid, 33, 2) + . ", 0x" . substr($if_uuid, 35, 2) . " }"); + $self->pidl_def("};"); + + my $maj = 0x0000FFFF & $x->{VERSION}; + $maj =~ s/\.(.*)$//g; + $self->pidl_def("static guint16 ver_dcerpc_$x->{NAME} = $maj;"); + $self->pidl_def(""); + } + + $return_types{$x->{NAME}} = {}; + + $self->Interface($x); + $self->pidl_code("\n".DumpFunctionTable($x)); + + foreach (sort(keys %{$return_types{$x->{NAME}}})) { + my ($type, $desc) = @{$return_types{$x->{NAME}}->{$_}}; + my $dt = $self->find_type($type); + $dt or die("Unable to find information about return type `$type'"); + $self->register_hf_field("hf_$x->{NAME}_$_", $desc, "$x->{NAME}.$_", $dt->{FT_TYPE}, "BASE_HEX", $dt->{VALSSTRING}, 0, ""); + $self->{hf_used}->{"hf_$x->{NAME}_$_"} = 1; + } + + $self->RegisterInterface($x); + $self->RegisterInterfaceHandoff($x); + + if (exists ($self->{conformance}->{header})) { + $self->pidl_hdr($self->{conformance}->{header}); + } + + $self->pidl_hdr("#endif /* $define */"); +} + +sub find_type($$) +{ + my ($self, $n) = @_; + + return $self->{conformance}->{types}->{$n}; +} + +sub register_type($$$$$$$$) +{ + my ($self, $type,$call,$ft,$base,$mask,$vals,$length) = @_; + + return if (defined($self->{conformance}->{types}->{$type})); + + $self->{conformance}->{types}->{$type} = { + NAME => $type, + DISSECTOR_NAME => $call, + FT_TYPE => $ft, + BASE_TYPE => $base, + MASK => $mask, + VALSSTRING => $vals, + ALIGNMENT => $length + }; +} + +# Loads the default types +sub Initialize($$) +{ + my ($self, $cnf_file) = @_; + + $self->{conformance} = { + imports => {}, + header_fields=> {} + }; + + ReadConformance($cnf_file, $self->{conformance}) or print STDERR "warning: No conformance file `$cnf_file'\n"; + + foreach my $bytes (qw(1 2 4 8)) { + my $bits = $bytes * 8; + $self->register_type("uint$bits", "offset = PIDL_dissect_uint$bits(tvb, offset, pinfo, tree, di, drep, \@HF\@, \@PARAM\@);", "FT_UINT$bits", "BASE_DEC", 0, "NULL", $bytes); + $self->register_type("int$bits", "offset = PIDL_dissect_uint$bits(tvb, offset, pinfo, tree, di, drep, \@HF\@, \@PARAM\@);", "FT_INT$bits", "BASE_DEC", 0, "NULL", $bytes); + } + + $self->register_type("uint3264", "offset = dissect_ndr_uint3264(tvb, offset, pinfo, tree, di, drep, \@HF\@, NULL);", "FT_UINT32", "BASE_DEC", 0, "NULL", 8); + $self->register_type("hyper", "offset = dissect_ndr_uint64(tvb, offset, pinfo, tree, di, drep, \@HF\@, NULL);", "FT_UINT64", "BASE_DEC", 0, "NULL", 8); + $self->register_type("int64", "offset = dissect_ndr_int64(tvb, offset, pinfo, tree, di, drep, \@HF\@, NULL);", "FT_INT64", "BASE_DEC", 0, "NULL", 8); + $self->register_type("udlong", "offset = dissect_ndr_duint32(tvb, offset, pinfo, tree, di, drep, \@HF\@, NULL);", "FT_UINT64", "BASE_DEC", 0, "NULL", 4); + $self->register_type("bool8", "offset = PIDL_dissect_uint8(tvb, offset, pinfo, tree, di, drep, \@HF\@, \@PARAM\@);","FT_INT8", "BASE_DEC", 0, "NULL", 1); + $self->register_type("char", "offset = PIDL_dissect_uint8(tvb, offset, pinfo, tree, di, drep, \@HF\@, \@PARAM\@);","FT_INT8", "BASE_DEC", 0, "NULL", 1); + $self->register_type("long", "offset = PIDL_dissect_uint32(tvb, offset, pinfo, tree, di, drep, \@HF\@, \@PARAM\@);","FT_INT32", "BASE_DEC", 0, "NULL", 4); + $self->register_type("dlong", "offset = dissect_ndr_duint32(tvb, offset, pinfo, tree, di, drep, \@HF\@, NULL);","FT_INT64", "BASE_DEC", 0, "NULL", 8); + $self->register_type("GUID", "offset = dissect_ndr_uuid_t(tvb, offset, pinfo, tree, di, drep, \@HF\@, NULL);","FT_GUID", "BASE_NONE", 0, "NULL", 4); + $self->register_type("policy_handle", "offset = PIDL_dissect_policy_hnd(tvb, offset, pinfo, tree, di, drep, \@HF\@, \@PARAM\@);","FT_BYTES", "BASE_NONE", 0, "NULL", 4); + $self->register_type("NTTIME", "offset = dissect_ndr_nt_NTTIME(tvb, offset, pinfo, tree, di, drep, \@HF\@);","FT_ABSOLUTE_TIME", "ABSOLUTE_TIME_LOCAL", 0, "NULL", 4); + $self->register_type("NTTIME_hyper", "offset = dissect_ndr_nt_NTTIME(tvb, offset, pinfo, tree, di, drep, \@HF\@);","FT_ABSOLUTE_TIME", "ABSOLUTE_TIME_LOCAL", 0, "NULL", 4); + $self->register_type("time_t", "offset = dissect_ndr_time_t(tvb, offset, pinfo,tree, di, drep, \@HF\@, NULL);","FT_ABSOLUTE_TIME", "ABSOLUTE_TIME_LOCAL", 0, "NULL", 4); + $self->register_type("NTTIME_1sec", "offset = dissect_ndr_nt_NTTIME(tvb, offset, pinfo, tree, di, drep, \@HF\@);", "FT_ABSOLUTE_TIME", "ABSOLUTE_TIME_LOCAL", 0, "NULL", 4); + $self->register_type("dom_sid28", " + di->hf_index = \@HF\@; + + offset = dissect_ndr_nt_SID28(tvb, offset, pinfo, tree, di, drep); + ", "FT_STRING", "BASE_NONE", 0, "NULL", 4); + $self->register_type("SID", " + di->hf_index = \@HF\@; + + offset = dissect_ndr_nt_SID_with_options(tvb, offset, pinfo, tree, di, drep, param); + ","FT_STRING", "BASE_NONE", 0, "NULL", 4); + $self->register_type("WERROR", + "offset = PIDL_dissect_uint32(tvb, offset, pinfo, tree, di, drep, \@HF\@, \@PARAM\@);","FT_UINT32", "BASE_DEC", 0, "VALS(WERR_errors)", 4); + $self->register_type("NTSTATUS", + "offset = PIDL_dissect_uint32(tvb, offset, pinfo, tree, di, drep, \@HF\@, \@PARAM\@);","FT_UINT32", "BASE_DEC", 0, "VALS(NT_errors)", 4); + $self->register_type("HRESULT", + "offset = PIDL_dissect_uint32(tvb, offset, pinfo, tree, di, drep, \@HF\@, \@PARAM\@);","FT_UINT32", "BASE_DEC", 0, "VALS(HRES_errors)", 4); + $self->register_type("ipv6address", "proto_tree_add_item(tree, \@HF\@, tvb, offset, 16, ENC_NA); offset += 16;", "FT_IPv6", "BASE_NONE", 0, "NULL", 16); + $self->register_type("ipv4address", "proto_tree_add_item(tree, \@HF\@, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4;", "FT_IPv4", "BASE_NONE", 0, "NULL", 4); + +} + +##################################################################### +# Generate Wireshark parser and header code +sub Parse($$$$$) +{ + my($self,$ndr,$idl_file,$h_filename,$cnf_file) = @_; + + $self->Initialize($cnf_file); + + return (undef, undef) if defined($self->{conformance}->{noemit_dissector}); + + my $notice = +"/* DO NOT EDIT + This file was automatically generated by Pidl + from $idl_file and $cnf_file. + + Pidl is a perl based IDL compiler for DCE/RPC idl files. + It is maintained by the Samba team, not the Wireshark team. + Instructions on how to download and install Pidl can be + found at https://wiki.wireshark.org/Pidl +*/ + +"; + + $self->{res}->{headers} = "\n"; + $self->{res}->{headers} .= "#include \"config.h\"\n"; + + $self->{res}->{headers} .= "#include \n"; + $self->{res}->{headers} .= "#include \n"; + $self->{res}->{headers} .= "#include \n\n"; + + $self->{res}->{headers} .= "#include \"packet-dcerpc.h\"\n"; + $self->{res}->{headers} .= "#include \"packet-dcerpc-nt.h\"\n"; + $self->{res}->{headers} .= "#include \"packet-windows-common.h\"\n"; + + my $h_basename = basename($h_filename); + + $self->{res}->{headers} .= "#include \"$h_basename\"\n"; + $self->pidl_code(""); + + if (defined($self->{conformance}->{ett})) { + register_ett($self,$_) foreach(@{$self->{conformance}->{ett}}) + } + + # Wireshark protocol registration + + foreach (@$ndr) { + $self->ProcessInterface($_) if ($_->{TYPE} eq "INTERFACE"); + $self->ProcessImport(@{$_->{PATHS}}) if ($_->{TYPE} eq "IMPORT"); + $self->ProcessInclude(@{$_->{PATHS}}) if ($_->{TYPE} eq "INCLUDE"); + } + + $self->{res}->{ett} = DumpEttDeclaration($self->{ett}); + $self->{res}->{hf} = $self->DumpHfDeclaration(); + + my $parser = $notice; + $parser.= $self->{res}->{headers}; + $parser.=$self->{res}->{ett}; + $parser.=$self->{res}->{hf}; + $parser.=$self->{res}->{def}; + if (exists ($self->{conformance}->{override})) { + $parser.=$self->{conformance}->{override}; + } + $parser.=$self->{res}->{code}; + + my $header = $notice; + $header.=$self->{res}->{hdr}; + + $self->CheckUsed($self->{conformance}); + + return ($parser,$header); +} + +############################################################################### +# ETT +############################################################################### + +sub register_ett($$) +{ + my ($self, $name) = @_; + + push (@{$self->{ett}}, $name); +} + +sub DumpEttList +{ + my ($ett) = @_; + my $res = "\tstatic gint *ett[] = {\n"; + foreach (@$ett) { + $res .= "\t\t&$_,\n"; + } + + return "$res\t};\n"; +} + +sub DumpEttDeclaration +{ + my ($ett) = @_; + my $res = "\n/* Ett declarations */\n"; + foreach (@$ett) { + $res .= "static gint $_ = -1;\n"; + } + + return "$res\n"; +} + +############################################################################### +# HF +############################################################################### + +sub register_hf_field($$$$$$$$$) +{ + my ($self,$index,$name,$filter_name,$ft_type,$base_type,$valsstring,$mask,$blurb) = @_; + + if (defined ($self->{conformance}->{hf_renames}->{$index})) { + $self->{conformance}->{hf_renames}->{$index}->{USED} = 1; + return $self->{conformance}->{hf_renames}->{$index}->{NEWNAME}; + } + + $self->{conformance}->{header_fields}->{$index} = { + INDEX => $index, + NAME => $name, + FILTER => $filter_name, + FT_TYPE => $ft_type, + BASE_TYPE => $base_type, + VALSSTRING => $valsstring, + MASK => $mask, + BLURB => $blurb + }; + + if ((not defined($blurb) or $blurb eq "") and + defined($self->{conformance}->{fielddescription}->{$index})) { + $self->{conformance}->{header_fields}->{$index}->{BLURB} = + $self->{conformance}->{fielddescription}->{$index}->{DESCRIPTION}; + $self->{conformance}->{fielddescription}->{$index}->{USED} = 1; + } + + return $index; +} + +sub change_hf_field_type($$$$) +{ + my ($self,$index,$ft_type,$base_type) = @_; + if (defined ($self->{conformance}->{hf_renames}->{$index})) { + print "Field $index has been renamed to ".$self->{conformance}->{hf_renames}->{$index}->{NEWNAME}." you can't change it's type"; + return 0; + } + + if (!defined ($self->{conformance}->{header_fields}->{$index})) { + print "Field $index doesn't exists"; + return 0; + } + $self->{conformance}->{header_fields}->{$index}->{FT_TYPE} = $ft_type; + $self->{conformance}->{header_fields}->{$index}->{BASE_TYPE} = $base_type; + return 1; +} + +sub DumpHfDeclaration($) +{ + my ($self) = @_; + my $res = ""; + + $res = "\n/* Header field declarations */\n"; + + foreach (sort(keys %{$self->{conformance}->{header_fields}})) + { + $res .= "static gint $_ = -1;\n"; + } + + return "$res\n"; +} + +sub make_str_or_null($) +{ + my $str = shift; + if (substr($str, 0, 1) eq "\"") { + $str = substr($str, 1, length($str)-2); + } + $str =~ s/^\s*//; + $str =~ s/\s*$//; + if ($str eq "") { + return "NULL"; + } + return make_str($str); +} + +sub DumpHfList($) +{ + my ($self) = @_; + my $res = "\tstatic hf_register_info hf[] = {\n"; + + foreach (sort {$a->{INDEX} cmp $b->{INDEX}} values %{$self->{conformance}->{header_fields}}) + { + $res .= "\t{ &$_->{INDEX},\n". + "\t { ".make_str($_->{NAME}).", ".make_str($_->{FILTER}).", $_->{FT_TYPE}, $_->{BASE_TYPE}, $_->{VALSSTRING}, $_->{MASK}, ".make_str_or_null($_->{BLURB}).", HFILL }},\n"; + } + + return $res."\t};\n"; +} + + +############################################################################### +# Function table +############################################################################### + +sub DumpFunctionTable($) +{ + my $if = shift; + + my $res = "static dcerpc_sub_dissector $if->{NAME}\_dissectors[] = {\n"; + foreach (@{$if->{FUNCTIONS}}) { + my $fn_name = $_->{NAME}; + $fn_name =~ s/^$if->{NAME}_//; + $res.= "\t{ $_->{OPNUM}, \"$fn_name\",\n"; + $res.= "\t $if->{NAME}_dissect_${fn_name}_request, $if->{NAME}_dissect_${fn_name}_response},\n"; + } + + $res .= "\t{ 0, NULL, NULL, NULL }\n"; + + return "$res};\n"; +} + +sub CheckUsed($$) +{ + my ($self, $conformance) = @_; + foreach (values %{$conformance->{header_fields}}) { + if (not defined($self->{hf_used}->{$_->{INDEX}})) { + warning($_->{POS}, "hf field `$_->{INDEX}' not used"); + } + } + + foreach (values %{$conformance->{hf_renames}}) { + if (not $_->{USED}) { + warning($_->{POS}, "hf field `$_->{OLDNAME}' not used"); + } + } + + foreach (values %{$conformance->{dissectorparams}}) { + if (not $_->{USED}) { + warning($_->{POS}, "dissector param never used"); + } + } + + foreach (values %{$conformance->{imports}}) { + if (not $_->{USED}) { + warning($_->{POS}, "import never used"); + } + } + + foreach (values %{$conformance->{types}}) { + if (not $_->{USED} and defined($_->{POS})) { + warning($_->{POS}, "type never used"); + } + } + + foreach (values %{$conformance->{fielddescription}}) { + if (not $_->{USED}) { + warning($_->{POS}, "description never used"); + } + } + + foreach (values %{$conformance->{tfs}}) { + if (not $_->{USED}) { + warning($_->{POS}, "True/False description never used"); + } + } +} + +1; -- cgit v1.2.3