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78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
#include <buffer.hpp>
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#include <service/Info.hpp>
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#include <service/address.hpp>
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#include <cassert>
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#include <sodium/crypto_generichash.h>
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namespace llarp
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{
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namespace service
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{
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bool
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ServiceInfo::DecodeKey(llarp_buffer_t key, llarp_buffer_t* val)
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{
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bool read = false;
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if(!BEncodeMaybeReadDictEntry("e", enckey, read, key, val))
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return false;
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if(!BEncodeMaybeReadDictEntry("s", signkey, read, key, val))
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return false;
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if(!BEncodeMaybeReadDictInt("v", version, read, key, val))
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return false;
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if(!BEncodeMaybeReadDictEntry("x", vanity, read, key, val))
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return false;
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return read;
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}
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bool
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ServiceInfo::BEncode(llarp_buffer_t* buf) const
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{
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if(!bencode_start_dict(buf))
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return false;
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if(!BEncodeWriteDictEntry("e", enckey, buf))
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return false;
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if(!BEncodeWriteDictEntry("s", signkey, buf))
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return false;
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if(!BEncodeWriteDictInt("v", LLARP_PROTO_VERSION, buf))
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return false;
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if(!vanity.IsZero())
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{
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if(!BEncodeWriteDictEntry("x", vanity, buf))
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return false;
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}
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return bencode_end(buf);
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}
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std::string
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ServiceInfo::Name() const
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{
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if(m_CachedAddr.IsZero())
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{
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Address addr;
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CalculateAddress(addr.as_array());
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return addr.ToString();
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}
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return m_CachedAddr.ToString();
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}
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bool ServiceInfo::CalculateAddress(std::array< byte_t, 32 >& data) const
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{
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byte_t tmp[256] = {0};
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auto buf = llarp::StackBuffer< decltype(tmp) >(tmp);
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if(!BEncode(&buf))
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return false;
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return crypto_generichash_blake2b(data.data(), data.size(), buf.base,
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buf.cur - buf.base, nullptr, 0)
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!= -1;
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}
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bool
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ServiceInfo::UpdateAddr()
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{
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return CalculateAddress(m_CachedAddr.as_array());
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}
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} // namespace service
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} // namespace llarp
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