release/src-rt-6.x.4708/router/samba-3.5.8/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 error 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($$)
  34 {
  35         my ($e, $l) = @_;
  36         my $res = "";
  37
  38         if (has_property($e, "charset")) {
  39                 $res .= "const char";
  40         } else {
  41                 $res .= mapTypeName($e->{TYPE});
  42         }
  43
  44         my $stars = ElementStars($e, $l);
  45
  46         $res .= " ".$stars unless ($stars eq "");
  47
  48         return $res;
  49 }
  50
  51 sub AllocOutVar($$$$$)
  52 {
  53         my ($e, $mem_ctx, $name, $env, $fail) = @_;
  54
  55         my $l = $e->{LEVELS}[0];
  56
  57         # we skip pointer to arrays
  58         if ($l->{TYPE} eq "POINTER") {
  59                 my $nl = GetNextLevel($e, $l);
  60                 $l = $nl if ($nl->{TYPE} eq "ARRAY");
  61         } elsif
  62
  63         # we don't support multi-dimentional arrays yet
  64         ($l->{TYPE} eq "ARRAY") {
  65                 my $nl = GetNextLevel($e, $l);
  66                 if ($nl->{TYPE} eq "ARRAY") {
  67                         fatal($e->{ORIGINAL},"multi-dimentional [out] arrays are not supported!");
  68                 }
  69         } else {
  70                 # neither pointer nor array, no need to alloc something.
  71                 return;
  72         }
  73
  74         if ($l->{TYPE} eq "ARRAY") {
  75                 unless(defined($l->{SIZE_IS})) {
  76                         error($e->{ORIGINAL}, "No size known for array `$e->{NAME}'");
  77                         pidl "#error No size known for array `$e->{NAME}'";
  78                 } else {
  79                         my $size = ParseExpr($l->{SIZE_IS}, $env, $e);
  80                         pidl "$name = talloc_zero_array($mem_ctx, " . DeclLevel($e, 1) . ", $size);";
  81                 }
  82         } else {
  83                 pidl "$name = talloc_zero($mem_ctx, " . DeclLevel($e, 1) . ");";
  84         }
  85
  86         pidl "if ($name == NULL) {";
  87         $fail->();
  88         pidl "}";
  89         pidl "";
  90 }
  91
  92 sub CallWithStruct($$$$)
  93 {
  94         my ($pipes_struct, $mem_ctx, $fn, $fail) = @_;
  95         my $env = GenerateFunctionOutEnv($fn);
  96         my $hasout = 0;
  97         foreach (@{$fn->{ELEMENTS}}) {
  98                 if (grep(/out/, @{$_->{DIRECTION}})) { $hasout = 1; }
  99         }
 100
 101         pidl "ZERO_STRUCT(r->out);" if ($hasout);
 102
 103         my $proto = "_$fn->{NAME}(pipes_struct *p, struct $fn->{NAME} *r";
 104         my $ret = "_$fn->{NAME}($pipes_struct, r";
 105         foreach (@{$fn->{ELEMENTS}}) {
 106                 my @dir = @{$_->{DIRECTION}};
 107                 if (grep(/in/, @dir) and grep(/out/, @dir)) {
 108                         pidl "r->out.$_->{NAME} = r->in.$_->{NAME};";
 109                 }
 110         }
 111
 112         foreach (@{$fn->{ELEMENTS}}) {
 113                 my @dir = @{$_->{DIRECTION}};
 114                 if (grep(/in/, @dir) and grep(/out/, @dir)) {
 115                         # noop
 116                 } elsif (grep(/out/, @dir) and not
 117                                  has_property($_, "represent_as")) {
 118                         AllocOutVar($_, $mem_ctx, "r->out.$_->{NAME}", $env, $fail);
 119                 }
 120         }
 121         $ret .= ")";
 122         $proto .= ");";
 123
 124         if ($fn->{RETURN_TYPE}) {
 125                 $ret = "r->out.result = $ret";
 126                 $proto = "$fn->{RETURN_TYPE} $proto";
 127         } else {
 128                 $proto = "void $proto";
 129         }
 130
 131         pidl_hdr "$proto";
 132         pidl "$ret;";
 133 }
 134
 135 sub ParseFunction($$)
 136 {
 137         my ($if,$fn) = @_;
 138
 139         my $op = "NDR_".uc($fn->{NAME});
 140
 141         pidl "static bool api_$fn->{NAME}(pipes_struct *p)";
 142         pidl "{";
 143         indent;
 144         pidl "const struct ndr_interface_call *call;";
 145         pidl "struct ndr_pull *pull;";
 146         pidl "struct ndr_push *push;";
 147         pidl "enum ndr_err_code ndr_err;";
 148         pidl "DATA_BLOB blob;";
 149         pidl "struct $fn->{NAME} *r;";
 150         pidl "";
 151         pidl "call = &ndr_table_$if->{NAME}.calls[$op];";
 152         pidl "";
 153         pidl "r = talloc(talloc_tos(), struct $fn->{NAME});";
 154         pidl "if (r == NULL) {";
 155         pidl "\treturn false;";
 156         pidl "}";
 157         pidl "";
 158         pidl "if (!prs_data_blob(&p->in_data.data, &blob, r)) {";
 159         pidl "\ttalloc_free(r);";
 160         pidl "\treturn false;";
 161         pidl "}";
 162         pidl "";
 163         pidl "pull = ndr_pull_init_blob(&blob, r, NULL);";
 164         pidl "if (pull == NULL) {";
 165         pidl "\ttalloc_free(r);";
 166         pidl "\treturn false;";
 167         pidl "}";
 168         pidl "";
 169         pidl "pull->flags |= LIBNDR_FLAG_REF_ALLOC;";
 170         pidl "ndr_err = call->ndr_pull(pull, NDR_IN, r);";
 171         pidl "if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {";
 172         pidl "\ttalloc_free(r);";
 173         pidl "\treturn false;";
 174         pidl "}";
 175         pidl "";
 176         pidl "if (DEBUGLEVEL >= 10) {";
 177         pidl "\tNDR_PRINT_IN_DEBUG($fn->{NAME}, r);";
 178         pidl "}";
 179         pidl "";
 180
 181         CallWithStruct("p", "r", $fn,
 182         sub {
 183                         pidl "\ttalloc_free(r);";
 184                         pidl "\treturn false;";
 185                 }
 186         );
 187
 188         pidl "";
 189         pidl "if (p->rng_fault_state) {";
 190         pidl "\ttalloc_free(r);";
 191         pidl "\t/* Return true here, srv_pipe_hnd.c will take care */";
 192         pidl "\treturn true;";
 193         pidl "}";
 194         pidl "";
 195         pidl "if (DEBUGLEVEL >= 10) {";
 196         pidl "\tNDR_PRINT_OUT_DEBUG($fn->{NAME}, r);";
 197         pidl "}";
 198         pidl "";
 199         pidl "push = ndr_push_init_ctx(r, NULL);";
 200         pidl "if (push == NULL) {";
 201         pidl "\ttalloc_free(r);";
 202         pidl "\treturn false;";
 203         pidl "}";
 204         pidl "";
 205         pidl "ndr_err = call->ndr_push(push, NDR_OUT, r);";
 206         pidl "if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {";
 207         pidl "\ttalloc_free(r);";
 208         pidl "\treturn false;";
 209         pidl "}";
 210         pidl "";
 211         pidl "blob = ndr_push_blob(push);";
 212         pidl "if (!prs_copy_data_in(&p->out_data.rdata, (const char *)blob.data, (uint32_t)blob.length)) {";
 213         pidl "\ttalloc_free(r);";
 214         pidl "\treturn false;";
 215         pidl "}";
 216         pidl "";
 217         pidl "talloc_free(r);";
 218         pidl "";
 219         pidl "return true;";
 220         deindent;
 221         pidl "}";
 222         pidl "";
 223 }
 224
 225 sub ParseDispatchFunction($)
 226 {
 227         my ($if) = @_;
 228
 229         pidl_hdr "NTSTATUS rpc_$if->{NAME}_dispatch(struct rpc_pipe_client *cli, TALLOC_CTX *mem_ctx, const struct ndr_interface_table *table, uint32_t opnum, void *r);";
 230         pidl "NTSTATUS rpc_$if->{NAME}_dispatch(struct rpc_pipe_client *cli, TALLOC_CTX *mem_ctx, const struct ndr_interface_table *table, uint32_t opnum, void *_r)";
 231         pidl "{";
 232         indent;
 233         pidl "if (cli->pipes_struct == NULL) {";
 234         pidl "\treturn NT_STATUS_INVALID_PARAMETER;";
 235         pidl "}";
 236         pidl "";
 237         pidl "switch (opnum)";
 238         pidl "{";
 239         indent;
 240         foreach my $fn (@{$if->{FUNCTIONS}}) {
 241                 next if ($fn->{PROPERTIES}{noopnum});
 242                 my $op = "NDR_".uc($fn->{NAME});
 243                 pidl "case $op: {";
 244                 indent;
 245                 pidl "struct $fn->{NAME} *r = (struct $fn->{NAME} *)_r;";
 246                 CallWithStruct("cli->pipes_struct", "mem_ctx", $fn,
 247                         sub { pidl "return NT_STATUS_NO_MEMORY;"; });
 248                 pidl "return NT_STATUS_OK;";
 249                 deindent;
 250                 pidl "}";
 251                 pidl "";
 252         }
 253
 254         pidl "default:";
 255         pidl "\treturn NT_STATUS_NOT_IMPLEMENTED;";
 256         deindent;
 257         pidl "}";
 258         deindent;
 259         pidl "}";
 260
 261         pidl "";
 262 }
 263
 264 sub ParseInterface($)
 265 {
 266         my $if = shift;
 267
 268         my $uif = uc($if->{NAME});
 269
 270         pidl_hdr "#ifndef __SRV_$uif\__";
 271         pidl_hdr "#define __SRV_$uif\__";
 272
 273         foreach (@{$if->{FUNCTIONS}}) {
 274                 next if ($_->{PROPERTIES}{noopnum});
 275                 ParseFunction($if, $_);
 276         }
 277
 278         pidl "";
 279         pidl "/* Tables */";
 280         pidl "static struct api_struct api_$if->{NAME}_cmds[] = ";
 281         pidl "{";
 282         indent;
 283
 284         foreach (@{$if->{FUNCTIONS}}) {
 285                 next if ($_->{PROPERTIES}{noopnum});
 286                 pidl "{\"" . uc($_->{NAME}) . "\", NDR_" . uc($_->{NAME}) . ", api_$_->{NAME}},";
 287         }
 288
 289         deindent;
 290         pidl "};";
 291
 292         pidl "";
 293
 294         pidl_hdr "void $if->{NAME}_get_pipe_fns(struct api_struct **fns, int *n_fns);";
 295         pidl "void $if->{NAME}_get_pipe_fns(struct api_struct **fns, int *n_fns)";
 296         pidl "{";
 297         indent;
 298         pidl "*fns = api_$if->{NAME}_cmds;";
 299         pidl "*n_fns = sizeof(api_$if->{NAME}_cmds) / sizeof(struct api_struct);";
 300         deindent;
 301         pidl "}";
 302         pidl "";
 303
 304         ParseDispatchFunction($if);
 305
 306         pidl_hdr "NTSTATUS rpc_$if->{NAME}_init(void);";
 307         pidl "NTSTATUS rpc_$if->{NAME}_init(void)";
 308         pidl "{";
 309         pidl "\treturn rpc_srv_register(SMB_RPC_INTERFACE_VERSION, \"$if->{NAME}\", \"$if->{NAME}\", \&ndr_table_$if->{NAME}, api_$if->{NAME}_cmds, sizeof(api_$if->{NAME}_cmds) / sizeof(struct api_struct));";
 310         pidl "}";
 311
 312         pidl_hdr "#endif /* __SRV_$uif\__ */";
 313 }
 314
 315 sub Parse($$$)
 316 {
 317         my($ndr,$header,$ndr_header) = @_;
 318
 319         $res = "";
 320         $res_hdr = "";
 321
 322         pidl "/*";
 323         pidl " * Unix SMB/CIFS implementation.";
 324         pidl " * server auto-generated by pidl. DO NOT MODIFY!";
 325         pidl " */";
 326         pidl "";
 327         pidl "#include \"includes.h\"";
 328         pidl "#include \"$header\"";
 329         pidl_hdr "#include \"$ndr_header\"";
 330         pidl "";
 331
 332         foreach (@$ndr) {
 333                 ParseInterface($_) if ($_->{TYPE} eq "INTERFACE");
 334         }
 335
 336         return ($res, $res_hdr);
 337 }
 338
 339 1;