000
21.09.2004, 19:26 Uhr
~Sunlight
Gast
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Kompiliert erfolgreich, aber irgendwie will er nie eine socketverbindung aufbauen. zumindest fliegt immer bei der Abfrage nach erfolg mit Wert -1 raus.
Warum?
Der Code stammt ursprünglich von meinem Linuxprogramm, mußte es etwas abwandeln, aber bisher halt nicht erfolgreich. Nun weiß ich nicht so recht weiter.
Hier der Source:
| C++: |
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winsock2.h>
/*#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>*/
//#include <unistd.h>
#include <process.h>
#include <iostream.h>
#include <conio.h>
#define startPort 0
#define endPort 4096
int main(int argc, char *argv[])
{
struct sockaddr_in addr;
struct servent *serv;
int s, i;
unsigned long begin, end, curr;
//check correct define of Ports to scan!
if (startPort > endPort)
{
printf("sorry, wrong define of startPort and endPort\n");
return 0;
}
//wrong usage? --> display USAGE message
if (argc < 3)
{
printf("IP Scanner\n");
printf("==========\n");
printf("scans all IPs from port 0 to 4096 and shows those are open\n");
printf("----------------------------------------------------------\n\n");
fprintf(stderr, "usage: %s <begin> <end>\n", argv[0]);
return 1;
}
begin = ntohl(inet_addr(argv[1]));
end = ntohl(inet_addr(argv[2]));
//set
if (begin > end)
{
curr = end;
end = begin;
begin = curr;
}
//do for all IPs in Range
//curr++ -> next IP :)
for (curr = begin; curr <= end; curr++)
{
addr.sin_addr.s_addr = htonl(curr);
printf("%s:\n", inet_ntoa(addr.sin_addr));
//i = Port to scan
for (i = startPort; i < endPort; i++)
{
SOCKET socketClient; // SOCKET-Variablen für Client
socketClient = socket(PF_INET, SOCK_STREAM, 0);
if (socketClient == INVALID_SOCKET)
{
printf("Error Socket Erstellung: %i\n", socketClient);
WSACleanup();
return -1;
}
addr.sin_addr.s_addr = htonl(curr);
addr.sin_port = htons((short)i);
addr.sin_family = AF_INET;
printf("%i\r", i);
fflush(stdout);
//connect and action...
if (!connect(socketClient, (struct sockaddr*)&addr, sizeof(addr)))
{
serv = getservbyport(addr.sin_port, "tcp");
if (serv)
printf("%i (%s) open\n", i, serv->s_name);
else
printf("%i (unknown) open\n", i);
}
//close socket!
closesocket(socketClient);
}
puts("-------------------------------");
}
return 0;
}
|
Hilfe! |
