int timeInit()
{
__int64 freq;
if( QueryPerformanceFrequency( (LARGE_INTEGER *) &freq ) )
{
QueryPerformanceCounter( (LARGE_INTEGER *) &timerStart );
timerRes = 1000000.0/(double)freq;
return 1;
}
else
{
traceWarning("no high performance counter found\n");
return 0;
}
}
/* Read key control file and return the number of specs stored or a negative
* error code.
*
* As the specs are read in the from and until time values are compared to
* present time. Only those keys which are valid are stored.
*/
int n2n_read_keyfile(n2n_cipherspec_t *specs, /* fill out this array of cipherspecs */
size_t numspecs, /* number of slots in the array. */
const char *ctrlfile_path) /* path to control file */
{
/* Each line contains one cipherspec. */
int retval = 0;
FILE *fp = NULL;
size_t idx = 0;
time_t now = time(NULL);
traceDebug("Reading '%s'\n", ctrlfile_path);
fp = fopen(ctrlfile_path, "r");
if (fp)
{
/* Read the file a line a time with fgets. */
char line[N2N_KEYFILE_LINESIZE];
size_t lineNum = 0;
while (idx < numspecs)
{
n2n_cipherspec_t *k = &(specs[idx]);
fgets(line, N2N_KEYFILE_LINESIZE, fp);
++lineNum;
if (strlen(line) > 1)
{
if (0 == parseKeyLine(k, line))
{
if (k->valid_until > now)
{
traceInfo(" --> [%u] from %lu, until %lu, transform=%hu, data=%s\n",
idx, k->valid_from, k->valid_until, k->t, k->opaque);
++retval;
++idx;
}
else
{
traceInfo(" --X [%u] from %lu, until %lu, transform=%hu, data=%s\n",
idx, k->valid_from, k->valid_until, k->t, k->opaque);
}
}
else
{
traceWarning("Failed to decode line %u\n", lineNum);
}
}
if (feof(fp))
{
break;
}
line[0] = 0; /* this line has been consumed */
}
fclose(fp);
fp = NULL;
}
else
{
traceError("Failed to open '%s'\n", ctrlfile_path);
retval = -1;
}
return retval;
}
