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exclude addresses with wrong keys

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orignal 2024-05-07 18:38:00 -04:00
parent c98926abf2
commit c454685605
1 changed files with 20 additions and 8 deletions
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24
libi2pd/RouterInfo.cpp
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@ -217,7 +217,7 @@ namespace data
uint8_t cost; // ignore
s.read ((char *)&cost, sizeof (cost));
s.read ((char *)&address->date, sizeof (address->date));
bool isHost = false, isStaticKey = false, isV2 = false;
bool isHost = false, isStaticKey = false, isV2 = false, isIntroKey = false;
char transportStyle[6];
ReadString (transportStyle, 6, s);
if (!strncmp (transportStyle, "NTCP", 4)) // NTCP or NTCP2
@ -294,26 +294,38 @@ namespace data
address->caps = ExtractAddressCaps (value);
else if (!strcmp (key, "s")) // ntcp2 or ssu2 static key
{
Base64ToByteStream (value, strlen (value), address->s, 32);
if (!(address->s[31] & 0x80)) // check if x25519 public key
if (Base64ToByteStream (value, strlen (value), address->s, 32) == 32 &&
!(address->s[31] & 0x80)) // check if x25519 public key
isStaticKey = true;
else
address->transportStyle = eTransportUnknown; // invalid address
}
else if (!strcmp (key, "i")) // ntcp2 iv or ssu2 intro
{
if (address->IsNTCP2 ())
{
Base64ToByteStream (value, strlen (value), address->i, 16);
if (Base64ToByteStream (value, strlen (value), address->i, 16) == 16)
address->published = true; // presence of "i" means "published" NTCP2
else
address->transportStyle = eTransportUnknown; // invalid address
}
else if (address->IsSSU2 ())
Base64ToByteStream (value, strlen (value), address->i, 32);
{
if (Base64ToByteStream (value, strlen (value), address->i, 32) == 32)
isIntroKey = true;
else
address->transportStyle = eTransportUnknown; // invalid address
}
}
else if (!strcmp (key, "v"))
{
if (!strcmp (value, "2"))
isV2 = true;
else
{
LogPrint (eLogWarning, "RouterInfo: Unexpected value ", value, " for v");
address->transportStyle = eTransportUnknown; // invalid address
}
}
else if (key[0] == 'i')
{
@ -391,7 +403,7 @@ namespace data
}
}
}
else if (address->transportStyle == eTransportSSU2 && isV2 && isStaticKey)
else if (address->transportStyle == eTransportSSU2 && isV2 && isStaticKey && isIntroKey)
{
if (address->IsV4 ()) supportedTransports |= eSSU2V4;
if (address->IsV6 ()) supportedTransports |= eSSU2V6;