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/*
Unix SMB/CIFS implementation.
SMB torture tester
Copyright (C) Andrew Tridgell 2003
Copyright (C) Jelmer Vernooij 2006
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"
#if (_SAMBA_BUILD_ >= 4)
#include "lib/cmdline/popt_common.h"
#include "system/filesys.h"
#include "system/locale.h"
#include "librpc/rpc/dcerpc.h"
#include "librpc/rpc/dcerpc_table.h"
#endif
static const struct dcerpc_interface_call *find_function(
const struct dcerpc_interface_table *p,
const char *function)
{
int i;
if (isdigit(function[0])) {
i = strtol(function, NULL, 0);
return &p->calls[i];
}
for (i=0;i<p->num_calls;i++) {
if (strcmp(p->calls[i].name, function) == 0) {
break;
}
}
if (i == p->num_calls) {
printf("Function '%s' not found\n", function);
exit(1);
}
return &p->calls[i];
}
#if (_SAMBA_BUILD_ >= 4)
static void show_pipes(void)
{
const struct dcerpc_interface_list *l;
printf("\nYou must specify a pipe\n");
printf("known pipes are:\n");
for (l=librpc_dcerpc_pipes();l;l=l->next) {
if(l->table->helpstring) {
printf("\t%s - %s\n", l->table->name, l->table->helpstring);
} else {
printf("\t%s\n", l->table->name);
}
}
exit(1);
}
#endif
static void show_functions(const struct dcerpc_interface_table *p)
{
int i;
printf("\nYou must specify a function\n");
printf("known functions on '%s' are:\n", p->name);
for (i=0;i<p->num_calls;i++) {
printf("\t0x%02x (%2d) %s\n", i, i, p->calls[i].name);
}
exit(1);
}
static char *stdin_load(TALLOC_CTX *mem_ctx, size_t *size)
{
int num_read, total_len = 0;
char buf[255];
char *result = NULL;
while((num_read = read(STDIN_FILENO, buf, 255)) > 0) {
if (result) {
result = (char *) talloc_realloc(
mem_ctx, result, char *, total_len + num_read);
} else {
result = (char *) talloc_size(mem_ctx, num_read);
}
memcpy(result + total_len, buf, num_read);
total_len += num_read;
}
if (size)
*size = total_len;
return result;
}
static const struct dcerpc_interface_table *load_iface_from_plugin(const char *plugin, const char *pipe_name)
{
const struct dcerpc_interface_table *p;
void *handle;
char *symbol;
handle = dlopen(plugin, RTLD_NOW);
if (handle == NULL) {
printf("%s: Unable to open: %s\n", plugin, dlerror());
return NULL;
}
symbol = talloc_asprintf(NULL, "dcerpc_table_%s", pipe_name);
p = (const struct dcerpc_interface_table *)dlsym(handle, symbol);
if (!p) {
printf("%s: Unable to find DCE/RPC interface table for '%s': %s\n", plugin, pipe_name, dlerror());
talloc_free(symbol);
return NULL;
}
talloc_free(symbol);
return p;
}
int main(int argc, const char *argv[])
{
const struct dcerpc_interface_table *p = NULL;
const struct dcerpc_interface_call *f;
const char *pipe_name, *function, *inout, *filename;
uint8_t *data;
size_t size;
DATA_BLOB blob;
struct ndr_pull *ndr_pull;
struct ndr_print *ndr_print;
TALLOC_CTX *mem_ctx;
int flags;
poptContext pc;
NTSTATUS status;
void *st;
void *v_st;
const char *ctx_filename = NULL;
const char *plugin = NULL;
bool validate = false;
bool dumpdata = false;
int opt;
enum {OPT_CONTEXT_FILE=1000, OPT_VALIDATE, OPT_DUMP_DATA, OPT_LOAD_DSO};
struct poptOption long_options[] = {
POPT_AUTOHELP
{"context-file", 'c', POPT_ARG_STRING, NULL, OPT_CONTEXT_FILE, "In-filename to parse first", "CTX-FILE" },
{"validate", 0, POPT_ARG_NONE, NULL, OPT_VALIDATE, "try to validate the data", NULL },
{"dump-data", 0, POPT_ARG_NONE, NULL, OPT_DUMP_DATA, "dump the hex data", NULL },
{"load-dso", 'l', POPT_ARG_STRING, NULL, OPT_LOAD_DSO, "load from shared object file", NULL },
POPT_COMMON_SAMBA
POPT_COMMON_VERSION
{ NULL }
};
#if (_SAMBA_BUILD_ >= 4)
dcerpc_table_init();
#else
/* Initialise samba stuff */
load_case_tables();
setlinebuf(stdout);
dbf = x_stderr;
setup_logging(argv[0],True);
#endif
pc = poptGetContext("ndrdump", argc, argv, long_options, 0);
poptSetOtherOptionHelp(
pc, "<pipe|uuid> <function> <inout> [<filename>]");
while ((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
case OPT_CONTEXT_FILE:
ctx_filename = poptGetOptArg(pc);
break;
case OPT_VALIDATE:
validate = true;
break;
case OPT_DUMP_DATA:
dumpdata = true;
break;
case OPT_LOAD_DSO:
plugin = poptGetOptArg(pc);
break;
}
}
pipe_name = poptGetArg(pc);
if (!pipe_name) {
poptPrintUsage(pc, stderr, 0);
#if (_SAMBA_BUILD_ >= 4)
show_pipes();
#endif
exit(1);
}
if (plugin != NULL) {
p = load_iface_from_plugin(plugin, pipe_name);
}
#if (_SAMBA_BUILD_ <= 3)
else {
fprintf(stderr, "Only loading from DSO's supported in Samba 3\n");
exit(1);
}
#else
if (!p) {
p = idl_iface_by_name(pipe_name);
}
if (!p) {
struct GUID uuid;
status = GUID_from_string(pipe_name, &uuid);
if (NT_STATUS_IS_OK(status)) {
p = idl_iface_by_uuid(&uuid);
}
}
#endif
if (!p) {
printf("Unknown pipe or UUID '%s'\n", pipe_name);
exit(1);
}
function = poptGetArg(pc);
inout = poptGetArg(pc);
filename = poptGetArg(pc);
if (!function || !inout) {
poptPrintUsage(pc, stderr, 0);
show_functions(p);
exit(1);
}
if (strcmp(inout, "in") == 0 ||
strcmp(inout, "request") == 0) {
flags = NDR_IN;
} else if (strcmp(inout, "out") == 0 ||
strcmp(inout, "response") == 0) {
flags = NDR_OUT;
} else {
printf("Bad inout value '%s'\n", inout);
exit(1);
}
f = find_function(p, function);
mem_ctx = talloc_init("ndrdump");
st = talloc_zero_size(mem_ctx, f->struct_size);
if (!st) {
printf("Unable to allocate %d bytes\n", (int)f->struct_size);
exit(1);
}
v_st = talloc_zero_size(mem_ctx, f->struct_size);
if (!v_st) {
printf("Unable to allocate %d bytes\n", (int)f->struct_size);
exit(1);
}
if (ctx_filename) {
if (flags == NDR_IN) {
printf("Context file can only be used for \"out\" packages\n");
exit(1);
}
#if (_SAMBA_BUILD_ >= 4)
data = (uint8_t *)file_load(ctx_filename, &size, mem_ctx);
#else
data = (uint8_t *)file_load(ctx_filename, &size, 0);
#endif
if (!data) {
perror(ctx_filename);
exit(1);
}
blob.data = data;
blob.length = size;
ndr_pull = ndr_pull_init_blob(&blob, mem_ctx);
ndr_pull->flags |= LIBNDR_FLAG_REF_ALLOC;
status = f->ndr_pull(ndr_pull, NDR_IN, st);
if (ndr_pull->offset != ndr_pull->data_size) {
printf("WARNING! %d unread bytes while parsing context file\n", ndr_pull->data_size - ndr_pull->offset);
}
if (!NT_STATUS_IS_OK(status)) {
printf("pull for context file returned %s\n", nt_errstr(status));
exit(1);
}
memcpy(v_st, st, f->struct_size);
}
if (filename)
#if (_SAMBA_BUILD_ >= 4)
data = (uint8_t *)file_load(filename, &size, mem_ctx);
#else
data = (uint8_t *)file_load(filename, &size, 0);
#endif
else
data = (uint8_t *)stdin_load(mem_ctx, &size);
if (!data) {
if (filename)
perror(filename);
else
perror("stdin");
exit(1);
}
blob.data = data;
blob.length = size;
ndr_pull = ndr_pull_init_blob(&blob, mem_ctx);
ndr_pull->flags |= LIBNDR_FLAG_REF_ALLOC;
status = f->ndr_pull(ndr_pull, flags, st);
printf("pull returned %s\n", nt_errstr(status));
if (ndr_pull->offset != ndr_pull->data_size) {
printf("WARNING! %d unread bytes\n", ndr_pull->data_size - ndr_pull->offset);
dump_data(0, ndr_pull->data+ndr_pull->offset, ndr_pull->data_size - ndr_pull->offset);
}
if (dumpdata) {
printf("%d bytes consumed\n", ndr_pull->offset);
dump_data(0, blob.data, blob.length);
}
ndr_print = talloc_zero(mem_ctx, struct ndr_print);
ndr_print->print = ndr_print_debug_helper;
ndr_print->depth = 1;
f->ndr_print(ndr_print, function, flags, st);
if (!NT_STATUS_IS_OK(status)) {
printf("dump FAILED\n");
exit(1);
}
if (validate) {
DATA_BLOB v_blob;
struct ndr_push *ndr_v_push;
struct ndr_pull *ndr_v_pull;
struct ndr_print *ndr_v_print;
uint32_t i;
uint8_t byte_a, byte_b;
bool differ;
ndr_v_push = ndr_push_init_ctx(mem_ctx);
status = f->ndr_push(ndr_v_push, flags, st);
if (!NT_STATUS_IS_OK(status)) {
printf("validate push FAILED\n");
exit(1);
}
v_blob = ndr_push_blob(ndr_v_push);
if (dumpdata) {
printf("%ld bytes generated (validate)\n", (long)v_blob.length);
dump_data(0, v_blob.data, v_blob.length);
}
ndr_v_pull = ndr_pull_init_blob(&v_blob, mem_ctx);
ndr_v_pull->flags |= LIBNDR_FLAG_REF_ALLOC;
status = f->ndr_pull(ndr_v_pull, flags, v_st);
if (!NT_STATUS_IS_OK(status)) {
printf("validate pull FAILED\n");
exit(1);
}
printf("pull returned %s\n", nt_errstr(status));
if (ndr_v_pull->offset != ndr_v_pull->data_size) {
printf("WARNING! %d unread bytes in validation\n", ndr_v_pull->data_size - ndr_v_pull->offset);
dump_data(0, ndr_v_pull->data+ndr_v_pull->offset, ndr_v_pull->data_size - ndr_v_pull->offset);
}
ndr_v_print = talloc_zero(mem_ctx, struct ndr_print);
ndr_v_print->print = ndr_print_debug_helper;
ndr_v_print->depth = 1;
f->ndr_print(ndr_v_print, function, flags, v_st);
if (blob.length != v_blob.length) {
printf("WARNING! orig bytes:%u validated pushed "
"bytes:%u\n", (unsigned int)blob.length,
(unsigned int)v_blob.length);
}
if (ndr_pull->offset != ndr_v_pull->offset) {
printf("WARNING! orig pulled bytes:%u validated pulled bytes:%u\n", ndr_pull->offset, ndr_v_pull->offset);
}
differ = false;
byte_a = 0x00;
byte_b = 0x00;
for (i=0; i < blob.length; i++) {
byte_a = blob.data[i];
if (i == v_blob.length) {
byte_b = 0x00;
differ = true;
break;
}
byte_b = v_blob.data[i];
if (byte_a != byte_b) {
differ = true;
break;
}
}
if (differ) {
printf("WARNING! orig and validated differ at byte 0x%02X (%u)\n", i, i);
printf("WARNING! orig byte[0x%02X] = 0x%02X validated byte[0x%02X] = 0x%02X\n",
i, byte_a, i, byte_b);
}
}
printf("dump OK\n");
talloc_free(mem_ctx);
poptFreeContext(pc);
return 0;
}
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