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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libtasn1.h>
int main (int argc, char** argv)
{
int result = 0, len;
asn1_node definitions = NULL, node1 = NULL;
char errorDescription[ASN1_MAX_ERROR_DESCRIPTION_SIZE];
const char *choicefile = getenv ("ASN1_MSCAT");
const char *datafile = getenv ("ASN1_SPC_PE_IMAGE_DATA");
FILE *fp;
char data[1024];
int data_size = sizeof (data);
unsigned etype;
int cmp;
if (choicefile == NULL) {
choicefile = "mscat.asn";
}
if (datafile == NULL) {
datafile = "spc_pe_image_data.der";
}
result = asn1_parser2tree(choicefile, &definitions, errorDescription);
if (result != ASN1_SUCCESS) {
fprintf(stderr, "error in %d: %s\n", __LINE__, errorDescription);
exit (1);
}
result = asn1_create_element(definitions,
"CATALOG.SpcPEImageData",
&node1);
if (result != ASN1_SUCCESS) {
fprintf(stderr, "error in %d\n", __LINE__);
exit (1);
}
fp = fopen(datafile, "rb");
if (fp == NULL) {
fprintf (stderr, "error in %d\n", __LINE__);
exit(1);
}
data_size = fread(data, 1, sizeof(data), fp);
fclose(fp);
result = asn1_der_decoding2(&node1,
data,
&data_size,
ASN1_DECODE_FLAG_STRICT_DER,
errorDescription);
if (result != ASN1_SUCCESS) {
fprintf(stderr, "error in %d: decoding: %s\n", __LINE__, errorDescription);
exit(1);
}
len = 0;
result = asn1_read_value_type(node1,
"flags",
NULL,
&len,
&etype);
if (result != ASN1_MEM_ERROR) {
fprintf(stderr, "error in %d: %s\n", __LINE__, errorDescription);
exit(1);
}
if ((size_t)len >= sizeof(data)) {
fprintf(stderr,
"error len=%d, sizeof(data)=%zu\n",
len,
sizeof(data));
exit(1);
}
result = asn1_read_value(node1, "flags", data, &len);
if (result != ASN1_SUCCESS) {
fprintf(stderr, "error in %d: %s\n", __LINE__, errorDescription);
exit (1);
}
etype = 0;
len = 0;
result = asn1_read_value_type(node1, "link", NULL, &len, &etype);
if (result != ASN1_MEM_ERROR)
{
fprintf(stderr,
"error in %d: result is: %s\n",
__LINE__,
asn1_strerror(result));
exit(1);
}
if (etype != ASN1_ETYPE_CHOICE) {
fprintf(stderr,
"error in %d: The type (%u) doesn't match choice.\n",
__LINE__,
etype);
exit(1);
}
if (len != 5) {
fprintf (stderr, "length doesn't match the expected (got: %d, should be: 20)\n", len);
exit (1);
}
len = sizeof(data);
result = asn1_read_value(node1, "link", data, &len);
if (result != ASN1_SUCCESS) {
fprintf(stderr, "error in %d: %s\n", __LINE__, errorDescription);
exit (1);
}
cmp = memcmp(data, "file", len);
if (cmp != 0) {
fprintf(stderr, "contents don't match\n");
exit(1);
}
printf("SUCCESS\n");
asn1_delete_structure (&node1);
asn1_delete_structure (&definitions);
return 0;
}
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