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This commit is contained in:
Adam Ierymenko 2016-08-04 10:39:28 -07:00
parent 5cf410490e
commit 56febbf2ba
5 changed files with 29 additions and 103 deletions
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25
node/Capability.cpp
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@ -21,19 +21,29 @@
#include "Identity.hpp"
#include "Topology.hpp"
#include "Switch.hpp"
#include "Network.hpp"
namespace ZeroTier {
int Capability::verify(const RuntimeEnvironment *RR) const
{
try {
if ((_maxCustodyChainLength < 1)||(_maxCustodyChainLength > ZT_MAX_CAPABILITY_CUSTODY_CHAIN_LENGTH))
return -1;
Buffer<(sizeof(Capability) * 2)> tmp;
this->serialize(tmp,true);
for(unsigned int c=0;c<ZT_MAX_CAPABILITY_CUSTODY_CHAIN_LENGTH;++c) {
if (!_custody[c].to)
return ((c == 0) ? -1 : 0);
if (!_custody[c].from)
return -1;
for(unsigned int c=0;c<_maxCustodyChainLength;++c) {
if (c == 0) {
if ((!_custody[c].to)||(!_custody[c].from)||(_custody[c].from != Network::controllerFor(_nwid)))
return -1; // the first entry must be present and from the network's controller
} else {
if (!_custody[c].to)
return 0; // all previous entries were valid, so we are valid
else if ((!_custody[c].from)||(_custody[c].from != _custody[c-1].to))
return -1; // otherwise if we have another entry it must be from the previous holder in the chain
}
const Identity id(RR->topology->getIdentity(_custody[c].from));
if (id) {
if (!id.verify(tmp.data(),tmp.size(),_custody[c].signature))
@ -44,9 +54,8 @@ int Capability::verify(const RuntimeEnvironment *RR) const
}
}
return 0;
} catch ( ... ) {
return -1;
}
} catch ( ... ) {}
return -1;
}
} // namespace ZeroTier