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connect.c
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connect.c
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#if defined(_WIN32) || defined(WIN32) || defined(__CYGWIN__) || defined(__MINGW32__) || defined(__BORLANDC__)
#define OS_WIN
#endif
#include "connect.h"
#include "bumerang_messages.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef OS_WIN
#include <windows.h>
#else
#include <sys/socket.h>
#include <sys/types.h>
#include <ifaddrs.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <net/if.h>
#define SOCKET_ERROR -1
#endif
#define PORTNO 33644
#define BACKLOG 8
#ifdef OS_WIN
static void getIpAddressForNT(char *addrp);
#else
static void getIpAddressForPosix(char *addrp);
#endif
static void connectError(char *errorname);
int connectForSend(void)
{
int servfd;
int clientfd;
int yes = 1;
struct sockaddr_in servaddr, clientaddr;
char ipaddr[100];
#ifdef OS_WIN
WSADATA wsadata;
int addr_len;
WSAStartup(MAKEWORD(2,2), &wsadata);
#else
socklen_t addr_len;
#endif
bumerang_info("Trying to connection");
#ifdef OS_WIN
getIpAddressForNT(ipaddr);
#else
getIpAddressForPosix(ipaddr);
#endif
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(PORTNO);
memset(&servaddr.sin_zero, '\0', 8);
servaddr.sin_addr.s_addr = inet_addr(ipaddr);
if ((servfd = socket(AF_INET, SOCK_STREAM, 0)) == SOCKET_ERROR)
connectError("socket");
if (setsockopt(servfd, SOL_SOCKET, SO_REUSEADDR, (char *)&yes, sizeof (int)) == SOCKET_ERROR)
connectError("setsockopt");
if (bind(servfd, (struct sockaddr *) &servaddr, sizeof (servaddr)) == SOCKET_ERROR)
connectError("bind");
if (listen(servfd, BACKLOG) == SOCKET_ERROR)
connectError("listen");
bumerang_info("Connection successfull");
bumerang_info("Waiting the client");
addr_len = sizeof (clientaddr);
if ((clientfd = accept(servfd, (struct sockaddr *) &clientaddr, &addr_len)) == SOCKET_ERROR)
connectError("accept");
return clientfd;
}
int connectForGet(const char *ipaddr)
{
int servfd;
struct sockaddr_in servaddr;
#ifdef OS_WIN
WSADATA wsadata;
WSAStartup(MAKEWORD(2,2), &wsadata);
#endif
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(PORTNO);
memset(&servaddr.sin_zero, '\0', 8);
servaddr.sin_addr.s_addr = inet_addr(ipaddr);
bumerang_info("Trying to connection");
if ((servfd = socket(AF_INET, SOCK_STREAM, 0)) == SOCKET_ERROR)
connectError("socket");
if (connect(servfd, (struct sockaddr *)&servaddr, sizeof(servaddr)) == SOCKET_ERROR)
connectError("connect");
bumerang_info("Connection successfull");
bumerang_info("Waiting the file");
return servfd;
}
void closeConnect(int socket)
{
shutdown(socket, 2);
if (close(socket) == SOCKET_ERROR)
connectError("close");
}
#ifdef OS_WIN
static void getIpAddressForNT(char *addrp)
{
struct hostent *host = gethostbyname("");
sprintf(addrp, "%s", inet_ntoa(*(struct in_addr *)*host->h_addr_list));
}
#else
static void getIpAddressForPosix(char *addrp)
{
int fd;
struct ifreq ifr;
fd = socket(AF_INET, SOCK_DGRAM, 0);
/* I want to get an IPv4 IP address */
ifr.ifr_addr.sa_family = AF_INET;
/* I want IP address attached to "eth0" */
strncpy(ifr.ifr_name, "eth0", IFNAMSIZ-1);
ioctl(fd, SIOCGIFADDR, &ifr);
close(fd);
/* display result */
sprintf(addrp, "%s\n", inet_ntoa(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr));
}
#endif
static void connectError(char *errorname)
{
#ifdef OS_WIN
wprintf(L"%s: %ld\n", errorname, WSAGetLastError());
WSACleanup();
#else
perror(errorname);
#endif
exit(EXIT_FAILURE);
}