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-rw-r--r--src/modules/m_cloaking.cpp160
1 files changed, 5 insertions, 155 deletions
diff --git a/src/modules/m_cloaking.cpp b/src/modules/m_cloaking.cpp
index 105d68833..3ad0c7ab3 100644
--- a/src/modules/m_cloaking.cpp
+++ b/src/modules/m_cloaking.cpp
@@ -30,10 +30,6 @@
enum CloakMode
{
- /** 1.2-compatible host-based cloak */
- MODE_COMPAT_HOST,
- /** 1.2-compatible IP-only cloak */
- MODE_COMPAT_IPONLY,
/** 2.0 cloak of "half" of the hostname plus the full IP hash */
MODE_HALF_CLOAK,
/** 2.0 cloak of IP hash, split at 2 common CIDR range points */
@@ -147,7 +143,6 @@ class ModuleCloaking : public Module
std::string prefix;
std::string suffix;
std::string key;
- unsigned int compatkey[4];
const char* xtab[4];
dynamic_reference<HashProvider> Hash;
@@ -224,63 +219,6 @@ class ModuleCloaking : public Module
return rv;
}
- std::string CompatCloak4(const char* ip)
- {
- irc::sepstream seps(ip, '.');
- std::string octet[4];
- int i[4];
-
- for (int j = 0; j < 4; j++)
- {
- seps.GetToken(octet[j]);
- i[j] = atoi(octet[j].c_str());
- }
-
- octet[3] = octet[0] + "." + octet[1] + "." + octet[2] + "." + octet[3];
- octet[2] = octet[0] + "." + octet[1] + "." + octet[2];
- octet[1] = octet[0] + "." + octet[1];
-
- /* Reset the Hash module and send it our IV */
-
- std::string rv;
-
- /* Send the Hash module a different hex table for each octet group's Hash sum */
- for (int k = 0; k < 4; k++)
- {
- rv.append(Hash->sumIV(compatkey, xtab[(compatkey[k]+i[k]) % 4], octet[k]).substr(0,6));
- if (k < 3)
- rv.append(".");
- }
- /* Stick them all together */
- return rv;
- }
-
- std::string CompatCloak6(const char* ip)
- {
- std::vector<std::string> hashies;
- std::string item;
- int rounds = 0;
-
- /* Reset the Hash module and send it our IV */
-
- for (const char* input = ip; *input; input++)
- {
- item += *input;
- if (item.length() > 7)
- {
- hashies.push_back(Hash->sumIV(compatkey, xtab[(compatkey[0]+rounds) % 4], item).substr(0,8));
- item.clear();
- }
- rounds++;
- }
- if (!item.empty())
- {
- hashies.push_back(Hash->sumIV(compatkey, xtab[(compatkey[0]+rounds) % 4], item).substr(0,8));
- }
- /* Stick them all together */
- return irc::stringjoiner(":", hashies, 0, hashies.size() - 1).GetJoined();
- }
-
std::string SegmentIP(const irc::sockets::sockaddrs& ip, bool full)
{
std::string bindata;
@@ -395,12 +333,6 @@ class ModuleCloaking : public Module
{
switch (mode)
{
- case MODE_COMPAT_HOST:
- testcloak = prefix + "-" + Hash->sumIV(compatkey, xtab[0], "*").substr(0,10);
- break;
- case MODE_COMPAT_IPONLY:
- testcloak = Hash->sumIV(compatkey, xtab[0], "*").substr(0,10);
- break;
case MODE_HALF_CLOAK:
testcloak = prefix + SegmentCloak("*", 3, 8) + suffix;
break;
@@ -418,75 +350,16 @@ class ModuleCloaking : public Module
suffix = tag->getString("suffix", ".IP");
std::string modestr = tag->getString("mode");
- if (modestr == "compat-host")
- mode = MODE_COMPAT_HOST;
- else if (modestr == "compat-ip")
- mode = MODE_COMPAT_IPONLY;
- else if (modestr == "half")
+ if (modestr == "half")
mode = MODE_HALF_CLOAK;
else if (modestr == "full")
mode = MODE_OPAQUE;
else
- throw ModuleException("Bad value for <cloak:mode>; must be one of compat-host, compat-ip, half, full");
-
- if (mode == MODE_COMPAT_HOST || mode == MODE_COMPAT_IPONLY)
- {
- bool lowercase = tag->getBool("lowercase");
-
- /* These are *not* using the need_positive parameter of ReadInteger -
- * that will limit the valid values to only the positive values in a
- * signed int. Instead, accept any value that fits into an int and
- * cast it to an unsigned int. That will, a bit oddly, give us the full
- * spectrum of an unsigned integer. - Special
- *
- * We must limit the keys or else we get different results on
- * amd64/x86 boxes. - psychon */
- const unsigned int limit = 0x80000000;
- compatkey[0] = (unsigned int) tag->getInt("key1");
- compatkey[1] = (unsigned int) tag->getInt("key2");
- compatkey[2] = (unsigned int) tag->getInt("key3");
- compatkey[3] = (unsigned int) tag->getInt("key4");
-
- if (!lowercase)
- {
- xtab[0] = "F92E45D871BCA630";
- xtab[1] = "A1B9D80C72E653F4";
- xtab[2] = "1ABC078934DEF562";
- xtab[3] = "ABCDEF5678901234";
- }
- else
- {
- xtab[0] = "f92e45d871bca630";
- xtab[1] = "a1b9d80c72e653f4";
- xtab[2] = "1abc078934def562";
- xtab[3] = "abcdef5678901234";
- }
+ throw ModuleException("Bad value for <cloak:mode>; must be half or full");
- if (prefix.empty())
- prefix = ServerInstance->Config->Network;
-
- if (!compatkey[0] || !compatkey[1] || !compatkey[2] || !compatkey[3] ||
- compatkey[0] >= limit || compatkey[1] >= limit || compatkey[2] >= limit || compatkey[3] >= limit)
- {
- std::string detail;
- if (!compatkey[0] || compatkey[0] >= limit)
- detail = "<cloak:key1> is not valid, it may be set to a too high/low value, or it may not exist.";
- else if (!compatkey[1] || compatkey[1] >= limit)
- detail = "<cloak:key2> is not valid, it may be set to a too high/low value, or it may not exist.";
- else if (!compatkey[2] || compatkey[2] >= limit)
- detail = "<cloak:key3> is not valid, it may be set to a too high/low value, or it may not exist.";
- else if (!compatkey[3] || compatkey[3] >= limit)
- detail = "<cloak:key4> is not valid, it may be set to a too high/low value, or it may not exist.";
-
- throw ModuleException("You have not defined cloak keys for m_cloaking!!! THIS IS INSECURE AND SHOULD BE CHECKED! - " + detail);
- }
- }
- else
- {
- key = tag->getString("key");
- if (key.empty() || key == "secret")
- throw ModuleException("You have not defined cloak keys for m_cloaking. Define <cloak:key> as a network-wide secret.");
- }
+ key = tag->getString("key");
+ if (key.empty() || key == "secret")
+ throw ModuleException("You have not defined cloak keys for m_cloaking. Define <cloak:key> as a network-wide secret.");
}
std::string GenCloak(const irc::sockets::sockaddrs& ip, const std::string& ipstr, const std::string& host)
@@ -495,29 +368,6 @@ class ModuleCloaking : public Module
switch (mode)
{
- case MODE_COMPAT_HOST:
- {
- if (ipstr != host)
- {
- std::string tail = LastTwoDomainParts(host);
-
- // xtab is not used here due to a bug in 1.2 cloaking
- chost = prefix + "-" + Hash->sumIV(compatkey, "0123456789abcdef", host).substr(0,8) + tail;
-
- /* Fix by brain - if the cloaked host is > the max length of a host (64 bytes
- * according to the DNS RFC) then they get cloaked as an IP.
- */
- if (chost.length() <= 64)
- break;
- }
- // fall through to IP cloak
- }
- case MODE_COMPAT_IPONLY:
- if (ip.sa.sa_family == AF_INET6)
- chost = CompatCloak6(ipstr.c_str());
- else
- chost = CompatCloak4(ipstr.c_str());
- break;
case MODE_HALF_CLOAK:
{
if (ipstr != host)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 11:45:49 +0000