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125 lines
2.9 KiB
C++
125 lines
2.9 KiB
C++
#ifndef _WIN32
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#include <arpa/inet.h>
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#endif
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#include "exit_info.hpp"
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#include "net.hpp"
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#include <llarp/util/bencode.h>
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#include <llarp/util/bits.hpp>
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#include <llarp/util/mem.h>
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#include <list>
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#include <cstring>
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namespace llarp
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{
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bool
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ExitInfo::BEncode(llarp_buffer_t* buf) const
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{
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SockAddr exitaddr = ipAddress.createSockAddr();
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const auto* exitaddr6 = static_cast<const sockaddr_in6*>(exitaddr);
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SockAddr netmaskaddr = netmask.createSockAddr();
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const auto* netmaskaddr6 = static_cast<const sockaddr_in6*>(netmaskaddr);
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char tmp[128] = {0};
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if (!bencode_start_dict(buf))
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return false;
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if (!inet_ntop(AF_INET6, &exitaddr6->sin6_addr, tmp, sizeof(tmp)))
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return false;
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if (!BEncodeWriteDictString("a", std::string(tmp), buf))
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return false;
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if (!inet_ntop(AF_INET6, &netmaskaddr6->sin6_addr, tmp, sizeof(tmp)))
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return false;
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if (!BEncodeWriteDictString("b", std::string(tmp), buf))
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return false;
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if (!BEncodeWriteDictEntry("k", pubkey, buf))
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return false;
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if (!BEncodeWriteDictInt("v", version, buf))
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return false;
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return bencode_end(buf);
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}
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static bool
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bdecode_ip_string(llarp_buffer_t* buf, in6_addr& ip)
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{
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char tmp[128] = {0};
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llarp_buffer_t strbuf;
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if (!bencode_read_string(buf, &strbuf))
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return false;
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if (strbuf.sz >= sizeof(tmp))
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return false;
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memcpy(tmp, strbuf.base, strbuf.sz);
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tmp[strbuf.sz] = 0;
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return inet_pton(AF_INET6, tmp, &ip.s6_addr[0]) == 1;
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}
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bool
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ExitInfo::DecodeKey(const llarp_buffer_t& k, llarp_buffer_t* buf)
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{
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bool read = false;
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if (!BEncodeMaybeReadDictEntry("k", pubkey, read, k, buf))
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return false;
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if (!BEncodeMaybeReadDictInt("v", version, read, k, buf))
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return false;
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if (k.startswith("a"))
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{
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in6_addr tmp;
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if (not bdecode_ip_string(buf, tmp))
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return false;
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SockAddr addr(tmp);
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ipAddress = IpAddress(addr);
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return true;
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}
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if (k.startswith("b"))
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{
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in6_addr tmp;
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if (not bdecode_ip_string(buf, tmp))
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return false;
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SockAddr addr(tmp);
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netmask = IpAddress(addr);
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return true;
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}
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return read;
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}
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std::string
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ExitInfo::ToString() const
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{
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/*
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// TODO: derive these from ipAdress
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throw std::runtime_error("FIXME: need in6_addr and netmask from IpAddress");
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in6_addr address;
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in6_addr netmask;
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Printer printer(stream, level, spaces);
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std::ostringstream ss;
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char tmp[128] = {0};
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if (inet_ntop(AF_INET6, (void*)&address, tmp, sizeof(tmp)))
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ss << tmp;
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else
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return stream;
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ss << std::string("/");
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#if defined(ANDROID)
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snprintf(tmp, sizeof(tmp), "%zu", llarp::bits::count_array_bits(netmask.s6_addr));
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ss << tmp;
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#else
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ss << std::to_string(llarp::bits::count_array_bits(netmask.s6_addr));
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#endif
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printer.printValue(ss.str());
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*/
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return fmt::format("[Exit {}]", ipAddress.ToString());
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}
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} // namespace llarp
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