pidl/lib/Parse/Pidl/Samba3/ServerNDR.pm

   1 ###################################################
   2 # Samba3 server generator for IDL structures
   3 # on top of Samba4 style NDR functions
   4 # Copyright jelmer@samba.org 2005-2006
   5 # released under the GNU GPL
   6
   7 package Parse::Pidl::Samba3::ServerNDR;
   8
   9 use Exporter;
  10 @ISA = qw(Exporter);
  11 @EXPORT_OK = qw(DeclLevel);
  12
  13 use strict;
  14 use Parse::Pidl qw(warning fatal);
  15 use Parse::Pidl::Typelist qw(mapTypeName scalar_is_reference);
  16 use Parse::Pidl::Util qw(ParseExpr has_property is_constant);
  17 use Parse::Pidl::NDR qw(GetNextLevel);
  18 use Parse::Pidl::Samba4 qw(ElementStars DeclLong);
  19 use Parse::Pidl::Samba4::Header qw(GenerateFunctionOutEnv);
  20
  21 use vars qw($VERSION);
  22 $VERSION = '0.01';
  23
  24 my $res;
  25 my $res_hdr;
  26 my $tabs = "";
  27 sub indent() { $tabs.="\t"; }
  28 sub deindent() { $tabs = substr($tabs, 1); }
  29 sub pidl($) { my ($txt) = @_; $res .= $txt?$tabs.(shift)."\n":"\n"; }
  30 sub pidl_hdr($) { $res_hdr .= (shift)."\n"; }
  31 sub fn_declare($) { my ($n) = @_; pidl $n; pidl_hdr "$n;"; }
  32
  33 sub DeclLevel($$)
  34 {
  35         my ($e, $l) = @_;
  36         my $res = "";
  37
  38         if (has_property($e, "charset")) {
  39                 $res .= "const char";
  40         } else {
  41                 $res .= mapTypeName($e->{TYPE});
  42         }
  43
  44         my $stars = ElementStars($e, $l);
  45
  46         $res .= " ".$stars unless ($stars eq "");
  47
  48         return $res;
  49 }
  50
  51 sub AllocOutVar($$$$)
  52 {
  53         my ($e, $mem_ctx, $name, $env) = @_;
  54
  55         my $l = $e->{LEVELS}[0];
  56
  57         # we skip pointer to arrays
  58         if ($l->{TYPE} eq "POINTER") {
  59                 my $nl = GetNextLevel($e, $l);
  60                 $l = $nl if ($nl->{TYPE} eq "ARRAY");
  61         }
  62
  63         # we don't support multi-dimentional arrays yet
  64         if ($l->{TYPE} eq "ARRAY") {
  65                 my $nl = GetNextLevel($e, $l);
  66                 if ($nl->{TYPE} eq "ARRAY") {
  67                         fatal($e->{ORIGINAL},"multi-dimentional [out] arrays are not supported!");
  68                 }
  69         }
  70
  71         if ($l->{TYPE} eq "ARRAY") {
  72                 my $size = ParseExpr($l->{SIZE_IS}, $env, $e);
  73                 pidl "$name = talloc_zero_array($mem_ctx, " . DeclLevel($e, 1) . ", $size);";
  74         } else {
  75                 pidl "$name = talloc_zero($mem_ctx, " . DeclLevel($e, 1) . ");";
  76         }
  77
  78         pidl "if ($name == NULL) {";
  79         pidl "\ttalloc_free($mem_ctx);";
  80         pidl "\treturn false;";
  81         pidl "}";
  82         pidl "";
  83 }
  84
  85 sub ParseFunction($$)
  86 {
  87         my ($if,$fn) = @_;
  88
  89         my $op = "NDR_".uc($fn->{NAME});
  90
  91         pidl "static bool api_$fn->{NAME}(pipes_struct *p)";
  92         pidl "{";
  93         indent;
  94         pidl "const struct ndr_interface_call *call;";
  95         pidl "struct ndr_pull *pull;";
  96         pidl "struct ndr_push *push;";
  97         pidl "enum ndr_err_code ndr_err;";
  98         pidl "DATA_BLOB blob;";
  99         pidl "struct $fn->{NAME} *r;";
 100         pidl "";
 101         pidl "call = &ndr_table_$if->{NAME}.calls[$op];";
 102         pidl "";
 103         pidl "r = talloc(talloc_tos(), struct $fn->{NAME});";
 104         pidl "if (r == NULL) {";
 105         pidl "\treturn false;";
 106         pidl "}";
 107         pidl "";
 108         pidl "if (!prs_data_blob(&p->in_data.data, &blob, r)) {";
 109         pidl "\ttalloc_free(r);";
 110         pidl "\treturn false;";
 111         pidl "}";
 112         pidl "";
 113         pidl "pull = ndr_pull_init_blob(&blob, r, NULL);";
 114         pidl "if (pull == NULL) {";
 115         pidl "\ttalloc_free(r);";
 116         pidl "\treturn false;";
 117         pidl "}";
 118         pidl "";
 119         pidl "pull->flags |= LIBNDR_FLAG_REF_ALLOC;";
 120         pidl "ndr_err = call->ndr_pull(pull, NDR_IN, r);";
 121         pidl "if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {";
 122         pidl "\ttalloc_free(r);";
 123         pidl "\treturn false;";
 124         pidl "}";
 125         pidl "";
 126         pidl "if (DEBUGLEVEL >= 10) {";
 127         pidl "\tNDR_PRINT_IN_DEBUG($fn->{NAME}, r);";
 128         pidl "}";
 129         pidl "";
 130
 131         my $env = GenerateFunctionOutEnv($fn);
 132         my $hasout = 0;
 133         foreach (@{$fn->{ELEMENTS}}) {
 134                 if (grep(/out/, @{$_->{DIRECTION}})) { $hasout = 1; }
 135         }
 136
 137         pidl "ZERO_STRUCT(r->out);" if ($hasout);
 138
 139         my $proto = "_$fn->{NAME}(pipes_struct *p, struct $fn->{NAME} *r";
 140         my $ret = "_$fn->{NAME}(p, r";
 141         foreach (@{$fn->{ELEMENTS}}) {
 142                 my @dir = @{$_->{DIRECTION}};
 143                 if (grep(/in/, @dir) and grep(/out/, @dir)) {
 144                         pidl "r->out.$_->{NAME} = r->in.$_->{NAME};";
 145                 } elsif (grep(/out/, @dir) and not
 146                                  has_property($_, "represent_as")) {
 147                         AllocOutVar($_, "r", "r->out.$_->{NAME}", $env);
 148                 }
 149         }
 150         $ret .= ")";
 151         $proto .= ");";
 152
 153         if ($fn->{RETURN_TYPE}) {
 154                 $ret = "r->out.result = $ret";
 155                 $proto = "$fn->{RETURN_TYPE} $proto";
 156         } else {
 157                 $proto = "void $proto";
 158         }
 159
 160         pidl_hdr "$proto";
 161         pidl "$ret;";
 162
 163         pidl "";
 164         pidl "if (p->rng_fault_state) {";
 165         pidl "\ttalloc_free(r);";
 166         pidl "\t/* Return true here, srv_pipe_hnd.c will take care */";
 167         pidl "\treturn true;";
 168         pidl "}";
 169         pidl "";
 170         pidl "if (DEBUGLEVEL >= 10) {";
 171         pidl "\tNDR_PRINT_OUT_DEBUG($fn->{NAME}, r);";
 172         pidl "}";
 173         pidl "";
 174         pidl "push = ndr_push_init_ctx(r);";
 175         pidl "if (push == NULL) {";
 176         pidl "\ttalloc_free(r);";
 177         pidl "\treturn false;";
 178         pidl "}";
 179         pidl "";
 180         pidl "ndr_err = call->ndr_push(push, NDR_OUT, r);";
 181         pidl "if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {";
 182         pidl "\ttalloc_free(r);";
 183         pidl "\treturn false;";
 184         pidl "}";
 185         pidl "";
 186         pidl "blob = ndr_push_blob(push);";
 187         pidl "if (!prs_copy_data_in(&p->out_data.rdata, (const char *)blob.data, (uint32_t)blob.length)) {";
 188         pidl "\ttalloc_free(r);";
 189         pidl "\treturn false;";
 190         pidl "}";
 191         pidl "";
 192         pidl "talloc_free(r);";
 193         pidl "";
 194         pidl "return true;";
 195         deindent;
 196         pidl "}";
 197         pidl "";
 198 }
 199
 200 sub ParseInterface($)
 201 {
 202         my $if = shift;
 203
 204         my $uif = uc($if->{NAME});
 205
 206         pidl_hdr "#ifndef __SRV_$uif\__";
 207         pidl_hdr "#define __SRV_$uif\__";
 208         ParseFunction($if, $_) foreach (@{$if->{FUNCTIONS}});
 209
 210         pidl "";
 211         pidl "/* Tables */";
 212         pidl "static struct api_struct api_$if->{NAME}_cmds[] = ";
 213         pidl "{";
 214         indent;
 215
 216         foreach (@{$if->{FUNCTIONS}}) {
 217                 pidl "{\"" . uc($_->{NAME}) . "\", NDR_" . uc($_->{NAME}) . ", api_$_->{NAME}},";
 218         }
 219
 220         deindent;
 221         pidl "};";
 222
 223         pidl "";
 224
 225         pidl_hdr "void $if->{NAME}_get_pipe_fns(struct api_struct **fns, int *n_fns);";
 226         pidl "void $if->{NAME}_get_pipe_fns(struct api_struct **fns, int *n_fns)";
 227         pidl "{";
 228         indent;
 229         pidl "*fns = api_$if->{NAME}_cmds;";
 230         pidl "*n_fns = sizeof(api_$if->{NAME}_cmds) / sizeof(struct api_struct);";
 231         deindent;
 232         pidl "}";
 233         pidl "";
 234
 235         pidl_hdr "NTSTATUS rpc_$if->{NAME}_init(void);";
 236         pidl "NTSTATUS rpc_$if->{NAME}_init(void)";
 237         pidl "{";
 238         pidl "\treturn rpc_pipe_register_commands(SMB_RPC_INTERFACE_VERSION, \"$if->{NAME}\", \"$if->{NAME}\", \&ndr_table_$if->{NAME}.syntax_id, api_$if->{NAME}_cmds, sizeof(api_$if->{NAME}_cmds) / sizeof(struct api_struct));";
 239         pidl "}";
 240
 241         pidl_hdr "#endif /* __SRV_$uif\__ */";
 242 }
 243
 244 sub Parse($$$)
 245 {
 246         my($ndr,$header,$ndr_header) = @_;
 247
 248         $res = "";
 249         $res_hdr = "";
 250
 251         pidl "/*";
 252         pidl " * Unix SMB/CIFS implementation.";
 253         pidl " * server auto-generated by pidl. DO NOT MODIFY!";
 254         pidl " */";
 255         pidl "";
 256         pidl "#include \"includes.h\"";
 257         pidl "#include \"$header\"";
 258         pidl_hdr "#include \"$ndr_header\"";
 259         pidl "";
 260
 261         foreach (@$ndr) {
 262                 ParseInterface($_) if ($_->{TYPE} eq "INTERFACE");
 263         }
 264
 265         return ($res, $res_hdr);
 266 }
 267
 268 1;