/* Unix SMB/CIFS implementation. auto-idl scanner Copyright (C) Andrew Tridgell 2003 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "includes.h" #include "torture/torture.h" #include "librpc/gen_ndr/ndr_drsuapi_c.h" #include "librpc/gen_ndr/ndr_misc.h" #include "librpc/rpc/dcerpc_table.h" #include "torture/rpc/rpc.h" #if 1 /* get a DRSUAPI policy handle */ static BOOL get_policy_handle(struct dcerpc_pipe *p, TALLOC_CTX *mem_ctx, struct policy_handle *handle) { NTSTATUS status; struct drsuapi_DsBind r; ZERO_STRUCT(r); r.out.bind_handle = handle; status = dcerpc_drsuapi_DsBind(p, mem_ctx, &r); if (!NT_STATUS_IS_OK(status)) { printf("drsuapi_DsBind failed - %s\n", nt_errstr(status)); return False; } return True; } #else /* get a SAMR handle */ static BOOL get_policy_handle(struct dcerpc_pipe *p, TALLOC_CTX *mem_ctx, struct policy_handle *handle) { NTSTATUS status; struct samr_Connect r; r.in.system_name = 0; r.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED; r.out.connect_handle = handle; status = dcerpc_samr_Connect(p, mem_ctx, &r); if (!NT_STATUS_IS_OK(status)) { printf("samr_Connect failed - %s\n", nt_errstr(status)); return False; } return True; } #endif static void fill_blob_handle(DATA_BLOB *blob, TALLOC_CTX *mem_ctx, struct policy_handle *handle) { DATA_BLOB b2; if (blob->length < 20) { return; } ndr_push_struct_blob(&b2, mem_ctx, handle, (ndr_push_flags_fn_t)ndr_push_policy_handle); memcpy(blob->data, b2.data, 20); } static void reopen(TALLOC_CTX *mem_ctx, struct dcerpc_pipe **p, const struct dcerpc_interface_table *iface) { NTSTATUS status; talloc_free(*p); status = torture_rpc_connection(mem_ctx, p, iface); if (!NT_STATUS_IS_OK(status)) { printf("Failed to reopen '%s' - %s\n", iface->name, nt_errstr(status)); exit(1); } } static void print_depth(int depth) { int i; for (i=0;i<depth;i++) { printf(" "); } } static void test_ptr_scan(TALLOC_CTX *mem_ctx, const struct dcerpc_interface_table *iface, int opnum, DATA_BLOB *base_in, int min_ofs, int max_ofs, int depth); static void try_expand(TALLOC_CTX *mem_ctx, const struct dcerpc_interface_table *iface, int opnum, DATA_BLOB *base_in, int insert_ofs, int depth) { DATA_BLOB stub_in, stub_out; int n; NTSTATUS status; struct dcerpc_pipe *p = NULL; reopen(mem_ctx, &p, iface); /* work out how much to expand to get a non fault */ for (n=0;n<2000;n++) { stub_in = data_blob(NULL, base_in->length + n); data_blob_clear(&stub_in); memcpy(stub_in.data, base_in->data, insert_ofs); memcpy(stub_in.data+insert_ofs+n, base_in->data+insert_ofs, base_in->length-insert_ofs); status = dcerpc_request(p, NULL, opnum, False, mem_ctx, &stub_in, &stub_out); if (!NT_STATUS_EQUAL(status, NT_STATUS_NET_WRITE_FAULT)) { print_depth(depth); printf("expand by %d gives %s\n", n, nt_errstr(status)); if (n >= 4) { test_ptr_scan(mem_ctx, iface, opnum, &stub_in, insert_ofs, insert_ofs+n, depth+1); } return; } else { #if 0 print_depth(depth); printf("expand by %d gives fault %s\n", n, dcerpc_errstr(mem_ctx, p->last_fault_code)); #endif } if (p->last_fault_code == 5) { reopen(mem_ctx, &p, iface); } } talloc_free(p); } static void test_ptr_scan(TALLOC_CTX *mem_ctx, const struct dcerpc_interface_table *iface, int opnum, DATA_BLOB *base_in, int min_ofs, int max_ofs, int depth) { DATA_BLOB stub_in, stub_out; int ofs; NTSTATUS status; struct dcerpc_pipe *p = NULL; reopen(mem_ctx, &p, iface); stub_in = data_blob(NULL, base_in->length); memcpy(stub_in.data, base_in->data, base_in->length); /* work out which elements are pointers */ for (ofs=min_ofs;ofs<=max_ofs-4;ofs+=4) { SIVAL(stub_in.data, ofs, 1); status = dcerpc_request(p, NULL, opnum, False, mem_ctx, &stub_in, &stub_out); if (NT_STATUS_EQUAL(status, NT_STATUS_NET_WRITE_FAULT)) { print_depth(depth); printf("possible ptr at ofs %d - fault %s\n", ofs-min_ofs, dcerpc_errstr(mem_ctx, p->last_fault_code)); if (p->last_fault_code == 5) { reopen(mem_ctx, &p, iface); } if (depth == 0) { try_expand(mem_ctx, iface, opnum, &stub_in, ofs+4, depth+1); } else { try_expand(mem_ctx, iface, opnum, &stub_in, max_ofs, depth+1); } SIVAL(stub_in.data, ofs, 0); continue; } SIVAL(stub_in.data, ofs, 0); } talloc_free(p); } static void test_scan_call(TALLOC_CTX *mem_ctx, const struct dcerpc_interface_table *iface, int opnum) { DATA_BLOB stub_in, stub_out; int i; NTSTATUS status; struct dcerpc_pipe *p = NULL; struct policy_handle handle; reopen(mem_ctx, &p, iface); get_policy_handle(p, mem_ctx, &handle); /* work out the minimum amount of input data */ for (i=0;i<2000;i++) { stub_in = data_blob(NULL, i); data_blob_clear(&stub_in); status = dcerpc_request(p, NULL, opnum, False, mem_ctx, &stub_in, &stub_out); if (NT_STATUS_IS_OK(status)) { printf("opnum %d min_input %d - output %d\n", opnum, (int)stub_in.length, (int)stub_out.length); dump_data(0, stub_out.data, stub_out.length); talloc_free(p); test_ptr_scan(mem_ctx, iface, opnum, &stub_in, 0, stub_in.length, 0); return; } fill_blob_handle(&stub_in, mem_ctx, &handle); status = dcerpc_request(p, NULL, opnum, False, mem_ctx, &stub_in, &stub_out); if (NT_STATUS_IS_OK(status)) { printf("opnum %d min_input %d - output %d (with handle)\n", opnum, (int)stub_in.length, (int)stub_out.length); dump_data(0, stub_out.data, stub_out.length); talloc_free(p); test_ptr_scan(mem_ctx, iface, opnum, &stub_in, 0, stub_in.length, 0); return; } if (NT_STATUS_EQUAL(status, NT_STATUS_NET_WRITE_FAULT)) { printf("opnum %d size %d fault %s\n", opnum, i, dcerpc_errstr(mem_ctx, p->last_fault_code)); if (p->last_fault_code == 5) { reopen(mem_ctx, &p, iface); } continue; } printf("opnum %d size %d error %s\n", opnum, i, nt_errstr(status)); } printf("opnum %d minimum not found!?\n", opnum); talloc_free(p); } static void test_auto_scan(TALLOC_CTX *mem_ctx, const struct dcerpc_interface_table *iface) { test_scan_call(mem_ctx, iface, 2); } BOOL torture_rpc_autoidl(struct torture_context *torture) { TALLOC_CTX *mem_ctx; const struct dcerpc_interface_table *iface; iface = idl_iface_by_name("drsuapi"); if (!iface) { printf("Unknown interface!\n"); return False; } mem_ctx = talloc_init("torture_rpc_autoidl"); printf("\nProbing pipe '%s'\n", iface->name); test_auto_scan(mem_ctx, iface); talloc_free(mem_ctx); return True; }