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function isaptr(elem) {
if (substr(elem, 1, 1) == "*") {
return 1;
}
return 0;
}
function header_elem1(type, elem, ref) {
if (type == "BUFFER5") {
printf("\tuint32 %s_len;\n", elem);
}
if (ref == 1) {
printf("\tuint32 %s_ptr;\n", elem);
} else {
printf("\t%s\t%s;\n", type, elem);
}
}
function header_elem2(type, elem, ref) {
if (ref) {
printf("\t%s\t%s;\n", type, elem);
}
}
function produce_header1() {
printf("\n/* %s structure */\n", struct_name);
printf("typedef struct {\n");
for (i=0;i<num_elems;i++) {
if (unions[i] != unions[i-1]) {
if (unions[i] != "") {
printf("\tunion {\n");
} else {
printf("\t} %s;\n", unions[i-1]);
}
}
if (isptr[i]) {
header_elem1(types[i], "*"elems[i], isref[i]);
} else {
header_elem1(types[i], elems[i], isref[i]);
}
}
if (unions[i-1] != "") {
printf("\t} %s;\n", unions[i-1]);
}
}
function produce_header2() {
for (i=0;i<num_elems;i++) {
if (isptr[i]) {
header_elem2(types[i], "*"elems[i], isref[i]);
} else {
header_elem2(types[i], elems[i], isref[i]);
}
}
printf("} %s;\n\n", struct_name);
}
function produce_header() {
produce_header1();
produce_header2();
}
function parse_structs() {
printf("\n\t/* parse the structures in the packet */\n\n");
for (i=0;i<num_elems;i++) {
if (types[i] == "UNISTR2") {
io_unistr2(elems[i]);
} else if (types[i] == "BUFFER5") {
io_buffer5(elems[i]);
}
}
}
function io_unistr2(elem) {
printf("\
if(!smb_io_unistr2(\"%s\", &il->%s, il->%s_ptr, ps, depth))\n\
return False;\n\
if(!prs_align(ps))\n\
return False;\n\
", elem, elem, elem);
}
function io_buffer5(elem) {
printf("\
if (il->%s_ptr) {\n\
if(!smb_io_buffer5(\"%s\", &il->%s, ps, depth))\n\
return False;\n\
if(!prs_align(ps))\n\
return False;\n\
}\n\
", elem, elem, elem);
}
function start_struct(name) {
num_elems=0;
union="";
case="";
struct_name=toupper(name);
func_name=tolower("io_"name);
if (name == test) {
produce_preamble();
}
}
function parse_one(type, elem) {
if (type == "uint32") {
uint32_parser(elem);
} else if (type == "UINT64_S") {
uint64_parser(elem);
} else if (type == "UNISTR2") {
unistr2_parser(elem);
} else if (type == "BUFFER5") {
buffer5_parser(elem);
} else if (type == "NTTIME") {
nttime_parser(elem);
} else {
generic_parser(type, elem);
}
}
function parse_elems() {
printf("\n\t/* parse the main elements of the packet */\n\n");
for (i=0;i<num_elems;i++) {
if (cases[i] != "") {
printf("\tif (il->%s == %s) {\n",
switches[i], cases[i]);
parse_one(types[i], unions[i]"."elems[i]);
printf("\t}\n");
} else {
parse_one(types[i], elems[i]);
}
}
}
function end_struct() {
produce_header();
func_header(func_name, struct_name);
parse_elems();
parse_structs();
func_footer();
}
function add_elem(type, elem, ref)
{
types[num_elems] = type;
elems[num_elems] = elem;
switches[num_elems] = switch;
cases[num_elems] = case;
unions[num_elems] = union;
isref[num_elems] = ref;
isptr[num_elems] = isaptr(elem);
if (isptr[num_elems] == 1) {
elems[num_elems] = substr(elems[num_elems], 2);
}
num_elems++;
}
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