source4/torture/rpc/autoidl.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    auto-idl scanner
   5
   6    Copyright (C) Andrew Tridgell 2003
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "torture/torture.h"
  24 #include "librpc/gen_ndr/ndr_drsuapi_c.h"
  25 #include "librpc/gen_ndr/ndr_misc.h"
  26 #include "librpc/ndr/ndr_table.h"
  27 #include "torture/rpc/rpc.h"
  28 #include "librpc/rpc/dcerpc_proto.h"
  29
  30
  31 #if 1
  32 /*
  33   get a DRSUAPI policy handle
  34 */
  35 static bool get_policy_handle(struct dcerpc_pipe *p,
  36                               TALLOC_CTX *mem_ctx,
  37                               struct policy_handle *handle)
  38 {
  39         NTSTATUS status;
  40         struct drsuapi_DsBind r;
  41
  42         ZERO_STRUCT(r);
  43         r.out.bind_handle = handle;
  44
  45         status = dcerpc_drsuapi_DsBind(p, mem_ctx, &r);
  46         if (!NT_STATUS_IS_OK(status)) {
  47                 printf("drsuapi_DsBind failed - %s\n", nt_errstr(status));
  48                 return false;
  49         }
  50
  51         return true;
  52 }
  53 #else
  54 /*
  55   get a SAMR handle
  56 */
  57 static bool get_policy_handle(struct dcerpc_pipe *p, TALLOC_CTX *mem_ctx,
  58                               struct policy_handle *handle)
  59 {
  60         NTSTATUS status;
  61         struct samr_Connect r;
  62
  63         r.in.system_name = 0;
  64         r.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
  65         r.out.connect_handle = handle;
  66
  67         status = dcerpc_samr_Connect(p, mem_ctx, &r);
  68         if (!NT_STATUS_IS_OK(status)) {
  69                 printf("samr_Connect failed - %s\n", nt_errstr(status));
  70                 return false;
  71         }
  72
  73         return true;
  74 }
  75 #endif
  76
  77 static void fill_blob_handle(DATA_BLOB *blob, TALLOC_CTX *mem_ctx,
  78                              struct policy_handle *handle)
  79 {
  80         DATA_BLOB b2;
  81
  82         if (blob->length < 20) {
  83                 return;
  84         }
  85
  86         ndr_push_struct_blob(&b2, mem_ctx, NULL, handle, (ndr_push_flags_fn_t)ndr_push_policy_handle);
  87
  88         memcpy(blob->data, b2.data, 20);
  89 }
  90
  91 static void reopen(struct torture_context *tctx,
  92                    struct dcerpc_pipe **p,
  93                    const struct ndr_interface_table *iface)
  94 {
  95         NTSTATUS status;
  96
  97         talloc_free(*p);
  98
  99         status = torture_rpc_connection(tctx, p, iface);
 100         if (!NT_STATUS_IS_OK(status)) {
 101                 printf("Failed to reopen '%s' - %s\n", iface->name, nt_errstr(status));
 102                 exit(1);
 103         }
 104 }
 105
 106 static void print_depth(int depth)
 107 {
 108         int i;
 109         for (i=0;i<depth;i++) {
 110                 printf("    ");
 111         }
 112 }
 113
 114 static void test_ptr_scan(struct torture_context *tctx, const struct ndr_interface_table *iface,
 115                           int opnum, DATA_BLOB *base_in, int min_ofs, int max_ofs, int depth);
 116
 117 static void try_expand(struct torture_context *tctx, const struct ndr_interface_table *iface,
 118                        int opnum, DATA_BLOB *base_in, int insert_ofs, int depth)
 119 {
 120         DATA_BLOB stub_in, stub_out;
 121         int n;
 122         NTSTATUS status;
 123         struct dcerpc_pipe *p = NULL;
 124
 125         reopen(tctx, &p, iface);
 126
 127         /* work out how much to expand to get a non fault */
 128         for (n=0;n<2000;n++) {
 129                 stub_in = data_blob(NULL, base_in->length + n);
 130                 data_blob_clear(&stub_in);
 131                 memcpy(stub_in.data, base_in->data, insert_ofs);
 132                 memcpy(stub_in.data+insert_ofs+n, base_in->data+insert_ofs, base_in->length-insert_ofs);
 133
 134                 status = dcerpc_request(p, NULL, opnum, false, tctx, &stub_in, &stub_out);
 135
 136                 if (!NT_STATUS_EQUAL(status, NT_STATUS_NET_WRITE_FAULT)) {
 137                         print_depth(depth);
 138                         printf("expand by %d gives %s\n", n, nt_errstr(status));
 139                         if (n >= 4) {
 140                                 test_ptr_scan(tctx, iface, opnum, &stub_in,
 141                                               insert_ofs, insert_ofs+n, depth+1);
 142                         }
 143                         return;
 144                 } else {
 145 #if 0
 146                         print_depth(depth);
 147                         printf("expand by %d gives fault %s\n", n, dcerpc_errstr(tctx, p->last_fault_code));
 148 #endif
 149                 }
 150                 if (p->last_fault_code == 5) {
 151                         reopen(tctx, &p, iface);
 152                 }
 153         }
 154
 155         talloc_free(p);
 156 }
 157
 158
 159 static void test_ptr_scan(struct torture_context *tctx, const struct ndr_interface_table *iface,
 160                           int opnum, DATA_BLOB *base_in, int min_ofs, int max_ofs, int depth)
 161 {
 162         DATA_BLOB stub_in, stub_out;
 163         int ofs;
 164         NTSTATUS status;
 165         struct dcerpc_pipe *p = NULL;
 166
 167         reopen(tctx, &p, iface);
 168
 169         stub_in = data_blob(NULL, base_in->length);
 170         memcpy(stub_in.data, base_in->data, base_in->length);
 171
 172         /* work out which elements are pointers */
 173         for (ofs=min_ofs;ofs<=max_ofs-4;ofs+=4) {
 174                 SIVAL(stub_in.data, ofs, 1);
 175                 status = dcerpc_request(p, NULL, opnum, false, tctx, &stub_in, &stub_out);
 176
 177                 if (NT_STATUS_EQUAL(status, NT_STATUS_NET_WRITE_FAULT)) {
 178                         print_depth(depth);
 179                         printf("possible ptr at ofs %d - fault %s\n",
 180                                ofs-min_ofs, dcerpc_errstr(tctx, p->last_fault_code));
 181                         if (p->last_fault_code == 5) {
 182                                 reopen(tctx, &p, iface);
 183                         }
 184                         if (depth == 0) {
 185                                 try_expand(tctx, iface, opnum, &stub_in, ofs+4, depth+1);
 186                         } else {
 187                                 try_expand(tctx, iface, opnum, &stub_in, max_ofs, depth+1);
 188                         }
 189                         SIVAL(stub_in.data, ofs, 0);
 190                         continue;
 191                 }
 192                 SIVAL(stub_in.data, ofs, 0);
 193         }
 194
 195         talloc_free(p);
 196 }
 197
 198
 199 static void test_scan_call(struct torture_context *tctx, const struct ndr_interface_table *iface, int opnum)
 200 {
 201         DATA_BLOB stub_in, stub_out;
 202         int i;
 203         NTSTATUS status;
 204         struct dcerpc_pipe *p = NULL;
 205         struct policy_handle handle;
 206
 207         reopen(tctx, &p, iface);
 208
 209         get_policy_handle(p, tctx, &handle);
 210
 211         /* work out the minimum amount of input data */
 212         for (i=0;i<2000;i++) {
 213                 stub_in = data_blob(NULL, i);
 214                 data_blob_clear(&stub_in);
 215
 216
 217                 status = dcerpc_request(p, NULL, opnum, false, tctx, &stub_in, &stub_out);
 218
 219                 if (NT_STATUS_IS_OK(status)) {
 220                         printf("opnum %d   min_input %d - output %d\n",
 221                                opnum, (int)stub_in.length, (int)stub_out.length);
 222                         dump_data(0, stub_out.data, stub_out.length);
 223                         talloc_free(p);
 224                         test_ptr_scan(tctx, iface, opnum, &stub_in, 0, stub_in.length, 0);
 225                         return;
 226                 }
 227
 228                 fill_blob_handle(&stub_in, tctx, &handle);
 229
 230                 status = dcerpc_request(p, NULL, opnum, false, tctx, &stub_in, &stub_out);
 231
 232                 if (NT_STATUS_IS_OK(status)) {
 233                         printf("opnum %d   min_input %d - output %d (with handle)\n",
 234                                opnum, (int)stub_in.length, (int)stub_out.length);
 235                         dump_data(0, stub_out.data, stub_out.length);
 236                         talloc_free(p);
 237                         test_ptr_scan(tctx, iface, opnum, &stub_in, 0, stub_in.length, 0);
 238                         return;
 239                 }
 240
 241                 if (NT_STATUS_EQUAL(status, NT_STATUS_NET_WRITE_FAULT)) {
 242                         printf("opnum %d  size %d fault %s\n", opnum, i, dcerpc_errstr(tctx, p->last_fault_code));
 243                         if (p->last_fault_code == 5) {
 244                                 reopen(tctx, &p, iface);
 245                         }
 246                         continue;
 247                 }
 248
 249                 printf("opnum %d  size %d error %s\n", opnum, i, nt_errstr(status));
 250         }
 251
 252         printf("opnum %d minimum not found!?\n", opnum);
 253         talloc_free(p);
 254 }
 255
 256
 257 static void test_auto_scan(struct torture_context *tctx, const struct ndr_interface_table *iface)
 258 {
 259         test_scan_call(tctx, iface, 2);
 260 }
 261
 262 bool torture_rpc_autoidl(struct torture_context *torture)
 263 {
 264         const struct ndr_interface_table *iface;
 265
 266         iface = ndr_table_by_name("drsuapi");
 267         if (!iface) {
 268                 printf("Unknown interface!\n");
 269                 return false;
 270         }
 271
 272         printf("\nProbing pipe '%s'\n", iface->name);
 273
 274         test_auto_scan(torture, iface);
 275
 276         return true;
 277 }