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115 lines
2.7 KiB
C++
115 lines
2.7 KiB
C++
6 years ago
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#include <llarp/router_contact.h>
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#include <llarp/link_message.hpp>
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#include "buffer.hpp"
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namespace llarp
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{
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InboundMessageHandler::InboundMessageHandler(llarp_router* _router)
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: router(_router)
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{
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reader.user = this;
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reader.on_key = &OnKey;
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}
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bool
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InboundMessageHandler::OnKey(dict_reader* r, llarp_buffer_t* key)
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{
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InboundMessageHandler* handler =
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static_cast< InboundMessageHandler* >(r->user);
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llarp_buffer_t strbuf;
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// we are reading the first key
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if(handler->firstkey)
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{
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// check for empty dict
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if(!key)
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return false;
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// we are expecting the first key to be 'a'
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if(!llarp_buffer_eq(*key, "a"))
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{
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printf("message does not have message type\n");
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return false;
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}
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if(!bdecode_read_string(r->buffer, &strbuf))
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{
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printf("could not value of message type");
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return false;
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}
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// bad key size
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if(strbuf.sz != 1)
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{
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printf("bad mesage type size: %ld\n", strbuf.sz);
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return false;
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}
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handler->msgtype = *strbuf.cur;
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handler->firstkey = false;
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return true;
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}
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// check for not the last element
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if(!key)
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return true;
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switch(handler->msgtype)
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{
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// LIM
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case 'i':
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if(llarp_buffer_eq(*key, "r"))
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{
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if(!llarp_rc_bdecode(handler->from->get_remote_router(handler->from),
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r->buffer))
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{
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printf("failed to decode RC\n");
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return false;
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}
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printf("decoded rc\n");
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return true;
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}
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else if(llarp_buffer_eq(*key, "v"))
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{
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if(!bdecode_read_integer(r->buffer, &handler->proto))
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return false;
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if(handler->proto != LLARP_PROTO_VERSION)
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{
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printf("llarp protocol version missmatch\n");
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return false;
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}
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return true;
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}
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else
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{
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printf("invalid LIM key: %c\n", *key->cur);
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return false;
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}
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default:
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printf("unknown link message type: %c\n", handler->msgtype);
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return false;
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}
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}
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bool
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InboundMessageHandler::ProcessFrom(llarp_link_session* src,
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llarp_buffer_t buf)
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{
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from = src;
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msgtype = 0;
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firstkey = true;
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return bdecode_read_dict(&buf, &reader);
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}
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bool
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InboundMessageHandler::FlushReplies()
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{
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printf("sending replies\n");
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bool success = true;
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while(sendq.size())
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{
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auto& msg = sendq.front();
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auto buf = llarp::Buffer< decltype(msg) >(msg);
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success &= from->sendto(from, buf);
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sendq.pop();
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}
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return success;
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}
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}
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