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