// ---------------------------------------------------------------------
static int sCompareInterfaces(FskNetInterfaceRecord *a, FskNetInterfaceRecord *b)
{
int ret = -1;
if (a->status != b->status)
return ret;
if (a->ip == b->ip) {
if (FskMemCompare(a->MAC, b->MAC, 6) == 0) {
if (FskStrCompare(a->name, b->name) == 0) {
ret = 0;
}
}
}
return ret;
}
void
xs_x509_decodeSubjectKeyId(xsMachine *the)
{
UInt32 sz = xsToInteger(xsGet(xsArg(0), xsID("length")));
unsigned char *p = xsGetHostData(xsArg(0)), *endp = p + sz, *endTBS, *endEXT, *extnID, *spki, *spk;
int l, extnIDLen, spkLen;
static UInt8 id_ce_ski[] = {2 * 40 + 5, 29, 14}; /* [2, 5, 29, 14] */
#define getTag() (p < endp ? (int)*p++ : -1)
#define getBerLen() _getBerLen(&p, endp)
#define nextTag() (getTag(), l = getBerLen(), p += l)
if (getTag() != 0x30)
return;
if ((l = getBerLen()) < 0)
return;
if (p + l > endp)
return;
/* TBSCertficate */
if (getTag() != 0x30)
return;
if ((l = getBerLen()) < 0)
return;
if ((endTBS = p + l) > endp)
return;
if (*p & 0x80) {
/* EXPLICT Version */
p++;
nextTag();
}
nextTag(); /* serialNumber */
nextTag(); /* signature */
nextTag(); /* issuer */
nextTag(); /* validity */
nextTag(); /* subject */
spki = p; /* subjectPublicKeyInfo */
nextTag();
/* OPTIONAL */
while (p < endTBS) {
int tag = getTag();
if ((l = getBerLen()) < 0)
return;
switch (tag & 0x1f) {
case 1: /* issuerUniqueID */
case 2: /* subjectUniqueID */
p += l;
continue; /* goto the next tag */
case 3: /* extensions */
break; /* fall thru */
default:
return;
}
/* must be a SEQUENCE of [1..MAX] */
if (getTag() != 0x30)
return;
if ((l = getBerLen()) < 0)
return;
endEXT = p + l;
while (p < endEXT) {
/* must be a SEQUENCE of {extnID, critical, extnValue} */
if (getTag() != 0x30)
return;
if ((l = getBerLen()) < 0)
return;
/* extnID: OBJECT ID */
if (getTag() != 0x06)
return;
if ((extnIDLen = getBerLen()) < 0)
return;
extnID = p;
p += extnIDLen;
/* critical: BOOLEAN */
if (*p == 0x01)
nextTag();
/* extnValue: OCTET STRING */
if (getTag() != 0x04)
return;
if ((l = getBerLen()) < 0)
return;
if (extnIDLen == sizeof(id_ce_ski) && FskMemCompare(extnID, id_ce_ski, extnIDLen) == 0) {
/* SKI: OCTET STRING */
if (getTag() != 0x04)
return;
l = getBerLen();
xsResult = xsNew1(xsGlobal, xsID("Chunk"), xsInteger(l));
FskMemCopy(xsGetHostData(xsResult), p, l);
return;
}
p += l;
}
}
{
/*
* Couldn't find Subject Key Identifier. Make up the ID from the Subject Public Key
*/
struct sha1 sha1;
p = spki;
if (getTag() != 0x30)
return; /* should be a SEQUENCE */
l = getBerLen();
/* skip AlgorithmIdentifier */
nextTag();
if (getTag() != 0x03)
return; /* should be a BIT STRING */
spkLen = getBerLen();
spk = p;
xsResult = xsNew1(xsGlobal, xsID("Chunk"), xsInteger(SHA1_DGSTSIZE));
sha1_create(&sha1);
sha1_update(&sha1, spk, spkLen);
sha1_fin(&sha1, xsGetHostData(xsResult));
}
}
