117 lines
2.5 KiB
C++
117 lines
2.5 KiB
C++
/***************************************************************************
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* By Théophile Bastian, 2017
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* M1 Network course project at ENS Cachan, Juliusz Chroboczek.
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* License: WTFPL v2 <http://www.wtfpl.net/>
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**************************************************************************/
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#include "configFile.h"
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#include <fstream>
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#include <cstring>
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#include <cstdlib>
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using namespace std;
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ConfigFile::ConfigFile() {
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selfId = randId();
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}
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bool ConfigFile::read(const char* path) {
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ifstream handle(path);
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if(!handle.is_open())
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return false;
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while(handle.good()) {
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string attr;
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handle >> attr;
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if(attr == "id") {
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handle >> hex >> selfId >> dec;
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}
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else if(attr == "bootstrap") {
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u16 port;
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u64 id;
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SockAddr addr;
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memset(&addr, 0, sizeof(addr));
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addr.sin6_family = AF_INET6;
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string addrStr;
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handle >> hex >> id >> dec;
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handle >> addrStr;
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handle >> port;
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addr.sin6_port = htons(port);
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if(inet_pton(AF_INET6, addrStr.c_str(), &(addr.sin6_addr)) != 1) {
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fprintf(stderr, "Could not convert '%s' to IPv6 address\n",
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addrStr.c_str());
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continue;
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}
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bootstrapNodes.push_back(Neighbour(id, addr));
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}
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else if(attr == "data") {
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u64 id;
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handle >> hex >> id >> dec;
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if(id == 0)
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id = randId();
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string dataStr;
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getline(handle, dataStr);
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size_t nonWSPos = 0;
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for(; nonWSPos < dataStr.size(); nonWSPos++)
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if(dataStr[nonWSPos] != ' ' && dataStr[nonWSPos] != '\t')
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break;
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if(nonWSPos == dataStr.size())
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continue;
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data.push_back(make_pair(id, dataStr.substr(nonWSPos)));
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}
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else if(attr.empty())
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continue;
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else {
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fprintf(stderr, "Unknown configuration item: '%s'\n",
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attr.c_str());
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continue;
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}
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}
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handle.close();
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return true;
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}
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bool ConfigFile::write(const char* path) {
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ofstream handle(path, ofstream::out | ofstream::trunc);
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if(!handle.is_open())
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return false;
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handle << "id " << hex << selfId << dec << '\n';
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for(Neighbour nei : bootstrapNodes) {
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char addr[54];
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if(inet_ntop(AF_INET6, &nei.addr.sin6_addr, addr, 54) == NULL) {
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perror("Could not convert IPv6 back to string");
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continue;
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}
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handle << "bootstrap " << hex << nei.id << dec << ' '
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<< addr << ' ' << ntohs(nei.addr.sin6_port) << '\n';
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}
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for(auto dat : data) {
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handle << "data " << hex << dat.first << dec << " "
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<< dat.second << '\n';
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}
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handle.close();
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return true;
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}
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u64 ConfigFile::randId() const {
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u64 out=0;
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for(int i=0; i < 8; i++) {
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out <<= 8;
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out += rand() % 0xFF;
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}
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return out;
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}
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