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###################################################
# Samba3 server generator for IDL structures
# on top of Samba4 style NDR functions
# Copyright jelmer@samba.org 2005-2006
# released under the GNU GPL
package Parse::Pidl::Samba3::ServerNDR;
use Exporter;
@ISA = qw(Exporter);
@EXPORT_OK = qw(DeclLevel);
use strict;
use Parse::Pidl qw(warning fatal);
use Parse::Pidl::Typelist qw(mapTypeName scalar_is_reference);
use Parse::Pidl::Util qw(ParseExpr has_property is_constant);
use Parse::Pidl::NDR qw(GetNextLevel);
use Parse::Pidl::Samba4 qw(ElementStars DeclLong);
use Parse::Pidl::Samba4::Header qw(GenerateFunctionOutEnv);
use vars qw($VERSION);
$VERSION = '0.01';
my $res;
my $res_hdr;
my $tabs = "";
sub indent() { $tabs.="\t"; }
sub deindent() { $tabs = substr($tabs, 1); }
sub pidl($) { my ($txt) = @_; $res .= $txt?$tabs.(shift)."\n":"\n"; }
sub pidl_hdr($) { $res_hdr .= (shift)."\n"; }
sub fn_declare($) { my ($n) = @_; pidl $n; pidl_hdr "$n;"; }
sub DeclLevel($$)
{
my ($e, $l) = @_;
my $res = "";
if (has_property($e, "charset")) {
$res .= "const char";
} else {
$res .= mapTypeName($e->{TYPE});
}
my $stars = ElementStars($e, $l);
$res .= " ".$stars unless ($stars eq "");
return $res;
}
sub AllocOutVar($$$$)
{
my ($e, $mem_ctx, $name, $env) = @_;
my $l = $e->{LEVELS}[0];
# we skip pointer to arrays
if ($l->{TYPE} eq "POINTER") {
my $nl = GetNextLevel($e, $l);
$l = $nl if ($nl->{TYPE} eq "ARRAY");
}
# we don't support multi-dimentional arrays yet
if ($l->{TYPE} eq "ARRAY") {
my $nl = GetNextLevel($e, $l);
if ($nl->{TYPE} eq "ARRAY") {
fatal($e->{ORIGINAL},"multi-dimentional [out] arrays are not supported!");
}
}
if ($l->{TYPE} eq "ARRAY") {
my $size = ParseExpr($l->{SIZE_IS}, $env, $e);
pidl "$name = talloc_zero_array($mem_ctx, " . DeclLevel($e, 1) . ", $size);";
} else {
pidl "$name = talloc_zero($mem_ctx, " . DeclLevel($e, 1) . ");";
}
pidl "if ($name == NULL) {";
pidl "\ttalloc_free($mem_ctx);";
pidl "\treturn false;";
pidl "}";
pidl "";
}
sub ParseFunction($$)
{
my ($if,$fn) = @_;
my $op = "NDR_".uc($fn->{NAME});
pidl "static bool api_$fn->{NAME}(pipes_struct *p)";
pidl "{";
indent;
pidl "const struct ndr_interface_call *call;";
pidl "struct ndr_pull *pull;";
pidl "struct ndr_push *push;";
pidl "enum ndr_err_code ndr_err;";
pidl "DATA_BLOB blob;";
pidl "struct $fn->{NAME} *r;";
pidl "";
pidl "call = &ndr_table_$if->{NAME}.calls[$op];";
pidl "";
pidl "r = talloc(talloc_tos(), struct $fn->{NAME});";
pidl "if (r == NULL) {";
pidl "\treturn false;";
pidl "}";
pidl "";
pidl "if (!prs_data_blob(&p->in_data.data, &blob, r)) {";
pidl "\ttalloc_free(r);";
pidl "\treturn false;";
pidl "}";
pidl "";
pidl "pull = ndr_pull_init_blob(&blob, r, NULL);";
pidl "if (pull == NULL) {";
pidl "\ttalloc_free(r);";
pidl "\treturn false;";
pidl "}";
pidl "";
pidl "pull->flags |= LIBNDR_FLAG_REF_ALLOC;";
pidl "ndr_err = call->ndr_pull(pull, NDR_IN, r);";
pidl "if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {";
pidl "\ttalloc_free(r);";
pidl "\treturn false;";
pidl "}";
pidl "";
pidl "if (DEBUGLEVEL >= 10) {";
pidl "\tNDR_PRINT_IN_DEBUG($fn->{NAME}, r);";
pidl "}";
pidl "";
my $env = GenerateFunctionOutEnv($fn);
my $hasout = 0;
foreach (@{$fn->{ELEMENTS}}) {
if (grep(/out/, @{$_->{DIRECTION}})) { $hasout = 1; }
}
pidl "ZERO_STRUCT(r->out);" if ($hasout);
my $proto = "_$fn->{NAME}(pipes_struct *p, struct $fn->{NAME} *r";
my $ret = "_$fn->{NAME}(p, r";
foreach (@{$fn->{ELEMENTS}}) {
my @dir = @{$_->{DIRECTION}};
if (grep(/in/, @dir) and grep(/out/, @dir)) {
pidl "r->out.$_->{NAME} = r->in.$_->{NAME};";
} elsif (grep(/out/, @dir) and not
has_property($_, "represent_as")) {
AllocOutVar($_, "r", "r->out.$_->{NAME}", $env);
}
}
$ret .= ")";
$proto .= ");";
if ($fn->{RETURN_TYPE}) {
$ret = "r->out.result = $ret";
$proto = "$fn->{RETURN_TYPE} $proto";
} else {
$proto = "void $proto";
}
pidl_hdr "$proto";
pidl "$ret;";
pidl "";
pidl "if (p->rng_fault_state) {";
pidl "\ttalloc_free(r);";
pidl "\t/* Return true here, srv_pipe_hnd.c will take care */";
pidl "\treturn true;";
pidl "}";
pidl "";
pidl "if (DEBUGLEVEL >= 10) {";
pidl "\tNDR_PRINT_OUT_DEBUG($fn->{NAME}, r);";
pidl "}";
pidl "";
pidl "push = ndr_push_init_ctx(r, NULL);";
pidl "if (push == NULL) {";
pidl "\ttalloc_free(r);";
pidl "\treturn false;";
pidl "}";
pidl "";
pidl "ndr_err = call->ndr_push(push, NDR_OUT, r);";
pidl "if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {";
pidl "\ttalloc_free(r);";
pidl "\treturn false;";
pidl "}";
pidl "";
pidl "blob = ndr_push_blob(push);";
pidl "if (!prs_copy_data_in(&p->out_data.rdata, (const char *)blob.data, (uint32_t)blob.length)) {";
pidl "\ttalloc_free(r);";
pidl "\treturn false;";
pidl "}";
pidl "";
pidl "talloc_free(r);";
pidl "";
pidl "return true;";
deindent;
pidl "}";
pidl "";
}
sub ParseInterface($)
{
my $if = shift;
my $uif = uc($if->{NAME});
pidl_hdr "#ifndef __SRV_$uif\__";
pidl_hdr "#define __SRV_$uif\__";
ParseFunction($if, $_) foreach (@{$if->{FUNCTIONS}});
pidl "";
pidl "/* Tables */";
pidl "static struct api_struct api_$if->{NAME}_cmds[] = ";
pidl "{";
indent;
foreach (@{$if->{FUNCTIONS}}) {
pidl "{\"" . uc($_->{NAME}) . "\", NDR_" . uc($_->{NAME}) . ", api_$_->{NAME}},";
}
deindent;
pidl "};";
pidl "";
pidl_hdr "void $if->{NAME}_get_pipe_fns(struct api_struct **fns, int *n_fns);";
pidl "void $if->{NAME}_get_pipe_fns(struct api_struct **fns, int *n_fns)";
pidl "{";
indent;
pidl "*fns = api_$if->{NAME}_cmds;";
pidl "*n_fns = sizeof(api_$if->{NAME}_cmds) / sizeof(struct api_struct);";
deindent;
pidl "}";
pidl "";
pidl_hdr "NTSTATUS rpc_$if->{NAME}_init(void);";
pidl "NTSTATUS rpc_$if->{NAME}_init(void)";
pidl "{";
pidl "\treturn rpc_pipe_register_commands(SMB_RPC_INTERFACE_VERSION, \"$if->{NAME}\", \"$if->{NAME}\", \&ndr_table_$if->{NAME}.syntax_id, api_$if->{NAME}_cmds, sizeof(api_$if->{NAME}_cmds) / sizeof(struct api_struct));";
pidl "}";
pidl_hdr "#endif /* __SRV_$uif\__ */";
}
sub Parse($$$)
{
my($ndr,$header,$ndr_header) = @_;
$res = "";
$res_hdr = "";
pidl "/*";
pidl " * Unix SMB/CIFS implementation.";
pidl " * server auto-generated by pidl. DO NOT MODIFY!";
pidl " */";
pidl "";
pidl "#include \"includes.h\"";
pidl "#include \"$header\"";
pidl_hdr "#include \"$ndr_header\"";
pidl "";
foreach (@$ndr) {
ParseInterface($_) if ($_->{TYPE} eq "INTERFACE");
}
return ($res, $res_hdr);
}
1;
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