81 lines
1.5 KiB
C++
81 lines
1.5 KiB
C++
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "logging.h"
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#include "module.h"
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#include "netpkt.h"
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NetPkt::NetPkt(int size)
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:size(size)
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{
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data = new char[size];
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}
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NetPkt::~NetPkt()
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{
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delete data;
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}
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int NetPkt::readFromSocket(int fd)
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{
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socklen_t i = sizeof(struct sockaddr_in);
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return recvfrom(fd, this->data, this->size, 0, (struct sockaddr *)&this->addr, &i);
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}
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int NetPkt::show(char* buf, int size)
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{
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return snprintf(buf, size, "(%s:%d) %d bytes",
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inet_ntoa(this->addr.sin_addr),
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ntohs(this->addr.sin_port),
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this->size);
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}
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NetPkt* NetPkt::createFromSocket(int fd)
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{
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int recvsize;
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if (ioctl(fd, FIONREAD, &recvsize) == -1) {
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LogSystem::log(LOG_ERROR, "NetPkt::createFromSocket()");
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return NULL;
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}
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NetPkt* retval = new NetPkt(recvsize);
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retval->readFromSocket(fd);
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return retval;
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}
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int NetPkt::checkPortArray(struct game_ports* portarr)
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{
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int myport = ntohs(this->addr.sin_port);
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while (portarr && portarr->portlo) {
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int port;
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for (port = portarr->portlo; port <= portarr->porthi; port++)
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if (port == myport)
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return portarr->gameid;
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portarr++;
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}
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return 0;
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}
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bool NetPkt::compare(int offset, const char* buf, int len)
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{
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if (offset >= this->size)
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return false;
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/* nicht ueber das paket hinaus vergleichen */
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if (offset + len >= this->size)
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len = this->size - offset;
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return (memcmp(this->data + offset, buf, len) == 0);
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}
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