mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-19 04:57:53 +00:00
f73e51e94c
* fix formatting
* properly adjust various lines
breakup multiple statements onto multiple lines
* insert {} around if, for, etc.
66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
/*
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* Copyright (c)2019 ZeroTier, Inc.
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file in the project's root directory.
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*
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* Change Date: 2025-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2.0 of the Apache License.
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*/
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/****/
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#include "Capability.hpp"
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#include "RuntimeEnvironment.hpp"
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#include "Identity.hpp"
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#include "Topology.hpp"
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#include "Switch.hpp"
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#include "Network.hpp"
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#include "Node.hpp"
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namespace ZeroTier {
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int Capability::verify(const RuntimeEnvironment *RR,void *tPtr) const
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{
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try {
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// There must be at least one entry, and sanity check for bad chain max length
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if ((_maxCustodyChainLength < 1)||(_maxCustodyChainLength > ZT_MAX_CAPABILITY_CUSTODY_CHAIN_LENGTH)) {
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return -1;
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}
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// Validate all entries in chain of custody
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Buffer<(sizeof(Capability) * 2)> tmp;
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this->serialize(tmp,true);
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for(unsigned int c=0;c<_maxCustodyChainLength;++c) {
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if (c == 0) {
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if ((!_custody[c].to)||(!_custody[c].from)||(_custody[c].from != Network::controllerFor(_nwid))) {
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return -1; // the first entry must be present and from the network's controller
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}
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} else {
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if (!_custody[c].to) {
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return 0; // all previous entries were valid, so we are valid
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} else if ((!_custody[c].from)||(_custody[c].from != _custody[c-1].to)) {
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return -1; // otherwise if we have another entry it must be from the previous holder in the chain
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}
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}
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const Identity id(RR->topology->getIdentity(tPtr,_custody[c].from));
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if (id) {
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if (!id.verify(tmp.data(),tmp.size(),_custody[c].signature)) {
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return -1;
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}
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} else {
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RR->sw->requestWhois(tPtr,RR->node->now(),_custody[c].from);
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return 1;
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}
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}
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// We reached max custody chain length and everything was valid
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return 0;
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} catch ( ... ) {}
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return -1;
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}
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} // namespace ZeroTier
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