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#include <llarp.h>
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#include <pthread.h>
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#include <signal.h>
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#include <stdio.h>
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#include <string.h>
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#include <llarp/logger.hpp>
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#include <thread>
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#include <vector>
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static void
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progress()
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{
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printf(".");
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fflush(stdout);
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}
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struct llarp_main
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{
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struct llarp_alloc mem;
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int num_nethreads = 1;
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std::vector< std::thread > netio_threads;
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struct llarp_crypto crypto;
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struct llarp_router *router = nullptr;
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struct llarp_threadpool *worker = nullptr;
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struct llarp_logic *logic = nullptr;
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struct llarp_config *config = nullptr;
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struct llarp_nodedb *nodedb = nullptr;
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struct llarp_ev_loop *mainloop = nullptr;
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char nodedb_dir[256];
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int exitcode;
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int
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shutdown()
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{
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printf("Shutting down ");
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progress();
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if(mainloop)
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llarp_ev_loop_stop(mainloop);
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progress();
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if(worker)
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llarp_threadpool_stop(worker);
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progress();
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if(worker)
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llarp_threadpool_join(worker);
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progress();
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if(logic)
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llarp_logic_stop(logic);
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progress();
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if(router)
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llarp_stop_router(router);
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progress();
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llarp_free_router(&router);
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progress();
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llarp_free_config(&config);
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progress();
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llarp_ev_loop_free(&mainloop);
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progress();
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llarp_free_threadpool(&worker);
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progress();
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llarp_free_logic(&logic);
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progress();
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llarp_nodedb_free(&nodedb);
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for(auto &t : netio_threads)
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{
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progress();
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t.join();
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}
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progress();
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netio_threads.clear();
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printf("stopped\n");
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fflush(stdout);
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return exitcode;
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}
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};
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void
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iter_main_config(struct llarp_config_iterator *itr, const char *section,
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const char *key, const char *val)
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{
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llarp_main *m = static_cast< llarp_main * >(itr->user);
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if(!strcmp(section, "router"))
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{
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if(!strcmp(key, "worker-threads"))
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{
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int workers = atoi(val);
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if(workers > 0 && m->worker == nullptr)
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{
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m->worker = llarp_init_threadpool(workers, "llarp-worker");
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}
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}
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if(!strcmp(key, "net-threads"))
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{
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m->num_nethreads = atoi(val);
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if(m->num_nethreads <= 0)
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m->num_nethreads = 1;
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}
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}
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if(!strcmp(section, "netdb"))
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{
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if(!strcmp(key, "dir"))
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{
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strncpy(m->nodedb_dir, val, sizeof(m->nodedb_dir));
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}
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}
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}
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llarp_main *sllarp = nullptr;
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void
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handle_signal(int sig)
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{
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if(sllarp->logic)
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llarp_logic_stop(sllarp->logic);
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if(sllarp->mainloop)
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llarp_ev_loop_stop(sllarp->mainloop);
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if(sllarp)
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{
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for(auto &t : sllarp->netio_threads)
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{
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progress();
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t.join();
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}
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progress();
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sllarp->netio_threads.clear();
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}
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printf("\ninterrupted\n");
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}
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int
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main(int argc, char *argv[])
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{
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const char *conffname = "daemon.ini";
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if(argc > 1)
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conffname = argv[1];
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sllarp = new llarp_main;
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llarp_mem_stdlib(&sllarp->mem);
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auto mem = &sllarp->mem;
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llarp_new_config(&sllarp->config);
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llarp_ev_loop_alloc(&sllarp->mainloop);
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llarp_crypto_libsodium_init(&sllarp->crypto);
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llarp::Info(__FILE__, LLARP_VERSION, " loading config at ", conffname);
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if(!llarp_load_config(sllarp->config, conffname))
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{
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llarp_config_iterator iter;
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iter.user = sllarp;
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iter.visit = iter_main_config;
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llarp_config_iter(sllarp->config, &iter);
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sllarp->nodedb = llarp_nodedb_new(mem, &sllarp->crypto);
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if(sllarp->nodedb_dir[0])
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{
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sllarp->nodedb_dir[sizeof(sllarp->nodedb_dir) - 1] = 0;
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if(llarp_nodedb_ensure_dir(sllarp->nodedb_dir))
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{
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// ensure worker thread pool
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if(!sllarp->worker)
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sllarp->worker = llarp_init_threadpool(2, "llarp-worker");
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// ensure netio thread
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sllarp->logic = llarp_init_logic(mem);
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sllarp->router = llarp_init_router(mem, sllarp->worker,
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sllarp->mainloop, sllarp->logic);
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if(llarp_configure_router(sllarp->router, sllarp->config))
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{
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signal(SIGINT, handle_signal);
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llarp_run_router(sllarp->router);
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// run net io thread
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auto netio = sllarp->mainloop;
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while(sllarp->num_nethreads--)
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{
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sllarp->netio_threads.emplace_back(
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[netio]() { llarp_ev_loop_run(netio); });
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pthread_setname_np(sllarp->netio_threads.back().native_handle(),
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"llarp-netio");
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}
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llarp::Info(__FILE__, "running");
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sllarp->exitcode = 0;
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llarp_logic_mainloop(sllarp->logic);
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}
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else
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llarp::Error(__FILE__, "failed to start router");
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}
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else
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llarp::Error(__FILE__, "Failed to initialize nodedb");
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}
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else
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llarp::Error(__FILE__, "no nodedb defined");
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auto code = sllarp->shutdown();
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delete sllarp;
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sllarp = nullptr;
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return code;
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}
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else
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llarp::Error(__FILE__, "failed to load config");
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delete sllarp;
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return 1;
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}
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