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proxymain.c
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proxymain.c
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/*
3APA3A simpliest proxy server
(c) 2002-2021 by Vladimir Dubrovin <3proxy@3proxy.org>
please read License Agreement
*/
#include "proxy.h"
#define param ((struct clientparam *) p)
#ifdef _WIN32
DWORD WINAPI threadfunc(LPVOID p) {
#else
void * threadfunc (void *p) {
#endif
int i = -1;
if(param->srv->cbsock != INVALID_SOCKET){
SASIZETYPE size = sizeof(param->sinsr);
struct pollfd fds;
fds.fd = param->srv->cbsock;
fds.events = POLLIN;
fds.revents = 0;
for(i=5+(param->srv->maxchild>>10); i; i--){
if(param->srv->so._poll(param->sostate, &fds, 1, 1000*CONNBACK_TO)!=1){
dolog(param, (unsigned char *)"Connect back not received, check connback client");
i = 0;
break;
}
param->remsock = param->srv->so._accept(param->sostate, param->srv->cbsock, (struct sockaddr*)¶m->sinsr, &size);
if(param->remsock == INVALID_SOCKET) {
dolog(param, (unsigned char *)"Connect back accept() failed");
continue;
}
{
#ifdef _WIN32
unsigned long ul=1;
ioctlsocket(param->remsock, FIONBIO, &ul);
#else
fcntl(param->remsock,F_SETFL,O_NONBLOCK | fcntl(param->remsock,F_GETFL));
#endif
}
#ifndef WITHMAIN
param->req = param->sinsr;
if(param->srv->acl) param->res = checkACL(param);
if(param->res){
dolog(param, (unsigned char *)"Connect back ACL failed");
param->srv->so._closesocket(param->sostate, param->remsock);
param->remsock = INVALID_SOCKET;
continue;
}
#endif
if(socksendto(param, param->remsock, (struct sockaddr*)¶m->sinsr, (unsigned char *)"C", 1, CONNBACK_TO*1000) != 1){
dolog(param, (unsigned char *)"Connect back sending command failed");
param->srv->so._closesocket(param->sostate, param->remsock);
param->remsock = INVALID_SOCKET;
continue;
}
break;
}
}
if(!i){
param->res = 13;
freeparam(param);
}
else {
#ifndef WITHMAIN
#ifndef _WIN32
sigset_t mask;
sigfillset(&mask);
if(param->srv->service != S_UDPPM)pthread_sigmask(SIG_SETMASK, &mask, NULL);
#endif
#endif
((struct clientparam *) p)->srv->pf((struct clientparam *)p);
}
#ifdef _WIN32
return 0;
#else
return NULL;
#endif
}
#undef param
struct socketoptions sockopts[] = {
#ifdef TCP_NODELAY
{TCP_NODELAY, "TCP_NODELAY"},
#endif
#ifdef TCP_CORK
{TCP_CORK, "TCP_CORK"},
#endif
#ifdef TCP_DEFER_ACCEPT
{TCP_DEFER_ACCEPT, "TCP_DEFER_ACCEPT"},
#endif
#ifdef TCP_QUICKACK
{TCP_QUICKACK, "TCP_QUICKACK"},
#endif
#ifdef TCP_TIMESTAMPS
{TCP_TIMESTAMPS, "TCP_TIMESTAMPS"},
#endif
#ifdef USE_TCP_FASTOPEN
{USE_TCP_FASTOPEN, "USE_TCP_FASTOPEN"},
#endif
#ifdef SO_REUSEADDR
{SO_REUSEADDR, "SO_REUSEADDR"},
#endif
#ifdef SO_REUSEPORT
{SO_REUSEPORT, "SO_REUSEPORT"},
#endif
#ifdef SO_PORT_SCALABILITY
{SO_PORT_SCALABILITY, "SO_PORT_SCALABILITY"},
#endif
#ifdef SO_REUSE_UNICASTPORT
{SO_REUSE_UNICASTPORT, "SO_REUSE_UNICASTPORT"},
#endif
#ifdef SO_KEEPALIVE
{SO_KEEPALIVE, "SO_KEEPALIVE"},
#endif
#ifdef SO_DONTROUTE
{SO_DONTROUTE, "SO_DONTROUTE"},
#endif
#ifdef IP_TRANSPARENT
{IP_TRANSPARENT, "IP_TRANSPARENT"},
#endif
#ifdef TCP_FASTOPEN
{TCP_FASTOPEN, "TCP_FASTOPEN"},
#endif
#ifdef TCP_FASTOPEN_CONNECT
{TCP_FASTOPEN_CONNECT, "TCP_FASTOPEN_CONNECT"},
#endif
{0, NULL}
};
char optsbuf[1024];
char * printopts(char *sep){
int i=0, pos=0;
for(; sockopts[i].optname; i++)pos += sprintf(optsbuf+pos,"%s%s",i?sep:"",sockopts[i].optname);
return optsbuf;
}
int getopts(const char *s){
int i=0, ret=0;
for(; sockopts[i].optname; i++)if(strstr(s,sockopts[i].optname)) ret |= (1<<i);
return ret;
}
void setopts(SOCKET s, int opts){
int i, opt, set;
for(i = 0; opts >= (opt = (1<<i)); i++){
set = 1;
if(opts & opt) setsockopt(s, *sockopts[i].optname == 'T'? IPPROTO_TCP:
#ifdef SOL_IP
*sockopts[i].optname == 'I'? SOL_IP:
#endif
SOL_SOCKET, sockopts[i].opt, (char *)&set, sizeof(set));
}
}
#ifndef MODULEMAINFUNC
#define MODULEMAINFUNC main
#define STDMAIN
#ifndef _WINCE
int main (int argc, char** argv){
#else
int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLine, int nCmdShow){
int argc;
char ** argv;
WNDCLASS wc;
HWND hwnd = 0;
#endif
#else
extern int linenum;
extern int haveerror;
int MODULEMAINFUNC (int argc, char** argv){
#endif
SOCKET sock = INVALID_SOCKET, new_sock = INVALID_SOCKET;
int i=0;
SASIZETYPE size;
pthread_t thread;
struct clientparam defparam;
struct srvparam srv;
struct clientparam * newparam;
int error = 0;
unsigned sleeptime;
unsigned char buf[256];
char *hostname=NULL;
int opt = 1, isudp = 0, iscbl = 0, iscbc = 0;
unsigned char *cbc_string = NULL, *cbl_string = NULL;
#ifndef NOIPV6
struct sockaddr_in6 cbsa;
#else
struct sockaddr_in cbsa;
#endif
FILE *fp = NULL;
struct linger lg;
int nlog = 5000;
char loghelp[] =
#ifdef STDMAIN
#ifndef _WIN32
" -I inetd mode (requires real socket, doesn't work with TTY)\n"
" -l@IDENT log to syslog IDENT\n"
#endif
" -d go to background (daemon)\n"
#else
" -u never ask for username\n"
" -u2 always ask for username\n"
#endif
#if defined SO_BINDTODEVICE || defined IP_BOUND_IF
" -Di(DEVICENAME) bind internal interface to device, e.g. eth1\n"
" -De(DEVICENAME) bind external interface to device, e.g. eth1\n"
#endif
#ifdef WITHSLICE
" -s Use slice() - faster proxing, but no filtering for data\n"
#endif
"-g(GRACE_TRAFF,GRACE_NUM,GRACE_DELAY) - delay GRACE_DELAY milliseconds before polling if average polling size below GRACE_TRAFF bytes and GRACE_NUM read operations in single directions are detected within 1 second to minimize polling\n"
" -fFORMAT logging format (see documentation)\n"
" -l log to stderr\n"
" -lFILENAME log to FILENAME\n"
" -b(BUFSIZE) size of network buffer (default 4096 for TCP, 16384 for UDP)\n"
" -S(STACKSIZE) value to add to default client thread stack size\n"
" -t be silent (do not log service start/stop)\n"
"\n"
" -iIP ip address or internal interface (clients are expected to connect)\n"
" -eIP ip address or external interface (outgoing connection will have this)\n"
" -rHOST:PORT Use IP:port for connect back proxy instead of listen port\n"
" -RHOST:PORT Use PORT to listen connect back proxy connection to pass data to\n"
" -4 Use IPv4 for outgoing connections\n"
" -6 Use IPv6 for outgoing connections\n"
" -46 Prefer IPv4 for outgoing connections, use both IPv4 and IPv6\n"
" -64 Prefer IPv6 for outgoing connections, use both IPv4 and IPv6\n"
" -ocOPTIONS, -osOPTIONS, -olOPTIONS, -orOPTIONS -oROPTIONS - options for\n"
" to-client (oc), to-server (os), listening (ol) socket, connect back client\n"
" (or) socket, connect back server (oR) listening socket\n"
" where possible options are: ";
#ifdef _WIN32
unsigned long ul = 1;
#else
pthread_attr_t pa;
#ifdef STDMAIN
int inetd = 0;
#endif
#endif
#ifdef _WIN32
HANDLE h;
#endif
#ifdef STDMAIN
#ifdef _WINCE
argc = ceparseargs((char *)lpCmdLine);
argv = ceargv;
if(FindWindow(lpCmdLine, lpCmdLine)) return 0;
ZeroMemory(&wc,sizeof(wc));
wc.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);
wc.hInstance=hInstance;
wc.hCursor=LoadCursor(NULL,IDC_ARROW);
wc.lpfnWndProc=DefWindowProc;
wc.style=CS_HREDRAW|CS_VREDRAW;
wc.lpszClassName=lpCmdLine;
RegisterClass(&wc);
hwnd = CreateWindowEx(WS_EX_TOOLWINDOW,lpCmdLine,lpCmdLine,WS_VISIBLE|WS_POPUP,0,0,0,0,0,0,hInstance,0);
#endif
#ifdef _WIN32
WSADATA wd;
WSAStartup(MAKEWORD( 1, 1 ), &wd);
#endif
#endif
srvinit(&srv, &defparam);
srv.pf = childdef.pf;
isudp = childdef.isudp;
srv.service = defparam.service = childdef.service;
#ifndef STDMAIN
if(conf.acl){
srv.acl = copyacl(conf.acl);
if(!srv.acl) haveerror = 2;
}
if(conf.authfuncs){
srv.authfuncs = copyauth(conf.authfuncs);
if(!srv.authfuncs) haveerror = 2;
}
if(!conf.services){
conf.services = &srv;
}
else {
srv.next = conf.services;
conf.services = conf.services->prev = &srv;
}
#ifndef _WIN32
{
sigset_t mask;
sigfillset(&mask);
pthread_sigmask(SIG_SETMASK, &mask, NULL);
}
#endif
#else
srv.needuser = 0;
pthread_mutex_init(&log_mutex, NULL);
#endif
for (i=1; i<argc; i++) {
if(*argv[i]=='-') {
switch(argv[i][1]) {
case 'd':
if(!conf.demon)daemonize();
conf.demon = 1;
break;
#if defined SO_BINDTODEVICE || defined IP_BOUND_IF
case 'D':
if(argv[i][2] == 'i') srv.ibindtodevice = mystrdup(argv[i] + 3);
else srv.obindtodevice = mystrdup(argv[i] + 3);
break;
#endif
case 'l':
srv.logfunc = logstdout;
if(srv.logtarget) myfree(srv.logtarget);
srv.logtarget = (unsigned char *)mystrdup(argv[i] + 2);
if(argv[i][2]) {
if(argv[i][2]=='@'){
#ifdef STDMAIN
#ifndef _WIN32
openlog(argv[i]+3, LOG_PID, LOG_DAEMON);
srv.logfunc = logsyslog;
#endif
#endif
}
else {
fp = fopen(argv[i] + 2, "a");
if (fp) {
srv.stdlog = fp;
}
}
}
break;
case 'i':
getip46(46, (unsigned char *)argv[i]+2, (struct sockaddr *)&srv.intsa);
break;
case 'e':
{
#ifndef NOIPV6
struct sockaddr_in6 sa6;
memset(&sa6, 0, sizeof(sa6));
error = !getip46(46, (unsigned char *)argv[i]+2, (struct sockaddr *)&sa6);
if(!error) {
if (*SAFAMILY(&sa6)==AF_INET) srv.extsa = sa6;
else srv.extsa6 = sa6;
}
#else
error = !getip46(46, (unsigned char *)argv[i]+2, (struct sockaddr *)&srv.extsa);
#endif
}
break;
case 'N':
getip46(46, (unsigned char *)argv[i]+2, (struct sockaddr *)&srv.extNat);
break;
case 'p':
*SAPORT(&srv.intsa) = htons(atoi(argv[i]+2));
break;
case 'P':
srv.targetport = ntohs(atoi(argv[i]+2));
break;
case '4':
case '6':
srv.family = atoi(argv[i]+1);
break;
case 'b':
srv.bufsize = atoi(argv[i]+2);
break;
case 'n':
srv.usentlm = atoi(argv[i]+2);
break;
#ifdef STDMAIN
#ifndef _WIN32
case 'I':
size = sizeof(defparam.sincl);
if(srv.so._getsockname(srv.so.state, 0, (struct sockaddr*)&defparam.sincl, &size) ||
*SAFAMILY(&defparam.sincl) != AF_INET) error = 1;
else inetd = 1;
break;
#endif
#endif
case 'f':
if(srv.logformat)myfree(srv.logformat);
srv.logformat = (unsigned char *)mystrdup(argv[i] + 2);
break;
case 't':
srv.silent = 1;
break;
case 'h':
hostname = argv[i] + 2;
break;
case 'c':
srv.requirecert = 1;
if(isdigit(argv[i][2])) srv.requirecert = atoi(argv[i]+2);
break;
case 'r':
cbc_string = (unsigned char *)mystrdup(argv[i] + 2);
iscbc = 1;
break;
case 'R':
cbl_string = (unsigned char *)mystrdup(argv[i] + 2);
iscbl = 1;
break;
case 'u':
srv.needuser = 0;
if(*(argv[i] + 2)) srv.needuser = atoi(argv[i] + 2);
break;
case 'T':
srv.transparent = 1;
break;
case 'S':
srv.stacksize = atoi(argv[i]+2);
break;
case 'a':
srv.anonymous = 1 + atoi(argv[i]+2);
break;
case 'g':
sscanf(argv[i]+2, "%d,%d,%d", &srv.gracetraf, &srv.gracenum, &srv.gracedelay);
break;
case 's':
#ifdef WITHSPLICE
if(isudp || srv.service == S_ADMIN)
#endif
srv.singlepacket = 1 + atoi(argv[i]+2);
#ifdef WITHSPLICE
else
if(*(argv[i]+2)) srv.usesplice = atoi(argv[i]+2);
#endif
break;
case 'o':
switch(argv[i][2]){
case 's':
srv.srvsockopts = getopts(argv[i]+3);
break;
case 'c':
srv.clisockopts = getopts(argv[i]+3);
break;
case 'l':
srv.lissockopts = getopts(argv[i]+3);
break;
case 'r':
srv.cbcsockopts = getopts(argv[i]+3);
break;
case 'R':
srv.cbcsockopts = getopts(argv[i]+3);
break;
default:
error = 1;
}
if(!error) break;
default:
error = 1;
break;
}
}
else break;
}
#ifndef STDMAIN
if(childdef.port) {
#endif
#ifndef PORTMAP
if (error || i!=argc) {
#ifndef STDMAIN
haveerror = 1;
conf.threadinit = 0;
#endif
fprintf(stderr, "%s of %s\n"
"Usage: %s options\n"
"Available options are:\n"
"%s\n"
"\t%s\n"
" -pPORT - service port to accept connections\n"
"%s"
"\tExample: %s -i127.0.0.1\n\n"
"%s",
argv[0],
conf.stringtable?(char *)conf.stringtable[3]: VERSION " (" BUILDDATE ")",
argv[0], loghelp, printopts("\n\t"), childdef.helpmessage, argv[0],
#ifdef STDMAIN
copyright
#else
""
#endif
);
return (1);
}
#endif
#ifndef STDMAIN
}
else {
#endif
#ifndef NOPORTMAP
if (error || argc != i+3 || *argv[i]=='-'|| (*SAPORT(&srv.intsa) = htons((unsigned short)atoi(argv[i])))==0 || (srv.targetport = htons((unsigned short)atoi(argv[i+2])))==0) {
#ifndef STDMAIN
haveerror = 1;
conf.threadinit = 0;
#endif
fprintf(stderr, "%s of %s\n"
"Usage: %s options"
" [-e<external_ip>] <port_to_bind>"
" <target_hostname> <target_port>\n"
"Available options are:\n"
"%s\n"
"\t%s\n"
"%s"
"\tExample: %s -d -i127.0.0.1 6666 serv.somehost.ru 6666\n\n"
"%s",
argv[0],
conf.stringtable?(char *)conf.stringtable[3]: VERSION " (" BUILDDATE ")",
argv[0], loghelp, printopts("\n\t"), childdef.helpmessage, argv[0],
#ifdef STDMAIN
copyright
#else
""
#endif
);
return (1);
}
srv.target = (unsigned char *)mystrdup(argv[i+1]);
#endif
#ifndef STDMAIN
}
#else
#ifndef _WIN32
if(inetd) {
fcntl(0,F_SETFL,O_NONBLOCK | fcntl(0,F_GETFL));
if(!isudp){
lg.l_onoff = 1;
lg.l_linger = conf.timeouts[STRING_L];
srv.so._setsockopt(srv.so.state, 0, SOL_SOCKET, SO_LINGER, (unsigned char *)&lg, sizeof(lg));
srv.so._setsockopt(srv.so.state, 0, SOL_SOCKET, SO_OOBINLINE, (unsigned char *)&opt, sizeof(int));
}
defparam.clisock = 0;
if(! (newparam = myalloc (sizeof(defparam)))){
return 2;
};
*newparam = defparam;
return((*srv.pf)((void *)newparam)? 1:0);
}
#endif
#endif
srvinit2(&srv, &defparam);
if(!*SAFAMILY(&srv.intsa)) *SAFAMILY(&srv.intsa) = AF_INET;
if(!*SAPORT(&srv.intsa)) *SAPORT(&srv.intsa) = htons(childdef.port);
*SAFAMILY(&srv.extsa) = AF_INET;
#ifndef NOIPV6
*SAFAMILY(&srv.extsa6) = AF_INET6;
#endif
if(hostname)parsehostname(hostname, &defparam, childdef.port);
#ifndef STDMAIN
copyfilter(conf.filters, &srv);
conf.threadinit = 0;
#endif
if (!iscbc) {
if(srv.srvsock == INVALID_SOCKET){
if(!isudp){
sock=srv.so._socket(srv.so.state, SASOCK(&srv.intsa), SOCK_STREAM, IPPROTO_TCP);
}
else {
sock=srv.so._socket(srv.so.state, SASOCK(&srv.intsa), SOCK_DGRAM, IPPROTO_UDP);
}
if( sock == INVALID_SOCKET) {
perror("socket()");
return -2;
}
setopts(sock, srv.lissockopts);
#ifdef _WIN32
ioctlsocket(sock, FIONBIO, &ul);
#else
fcntl(sock,F_SETFL,O_NONBLOCK | fcntl(sock,F_GETFL));
#endif
srv.srvsock = sock;
opt = 1;
if(srv.so._setsockopt(srv.so.state, sock, SOL_SOCKET, SO_REUSEADDR, (char *)&opt, sizeof(int)))perror("setsockopt()");
#ifdef SO_REUSEPORT
opt = 1;
srv.so._setsockopt(srv.so.state, sock, SOL_SOCKET, SO_REUSEPORT, (char *)&opt, sizeof(int));
#endif
#if defined SO_BINDTODEVICE
if(srv.ibindtodevice && srv.so._setsockopt(srv.so.state, sock, SOL_SOCKET, SO_BINDTODEVICE, srv.ibindtodevice, strlen(srv.ibindtodevice) + 1)) {
dolog(&defparam, "failed to bind device");
return -12;
}
#elif defined IP_BOUND_IF
if(srv.ibindtodevice){
int idx;
idx = if_nametoindex(srv.ibindtodevice);
if(!idx || (*SAFAMILY(&srv.intsa) == AF_INET && setsockopt(sock, IPPROTO_IP, IP_BOUND_IF, &idx, sizeof(idx)))) {
dolog(&defparam, (unsigned char *)"failed to bind device");
return -12;
}
#ifndef NOIPV6
if((*SAFAMILY(&srv.intsa) == AF_INET6 && srv.so._setsockopt(srv.so.state, sock, IPPROTO_IPV6, IPV6_BOUND_IF, &idx, sizeof(idx)))) {
dolog(&defparam, (unsigned char *)"failed to bind device");
return -12;
}
#endif
}
#endif
}
size = sizeof(srv.intsa);
for(sleeptime = SLEEPTIME * 100; srv.so._bind(srv.so.state, sock, (struct sockaddr*)&srv.intsa, SASIZE(&srv.intsa))==-1; usleep(sleeptime)) {
sprintf((char *)buf, "bind(): %s", strerror(errno));
if(!srv.silent)dolog(&defparam, buf);
sleeptime = (sleeptime<<1);
if(!sleeptime) {
srv.so._closesocket(srv.so.state, sock);
return -3;
}
}
if(!isudp){
if(srv.so._listen (srv.so.state, sock, srv.backlog?srv.backlog : 1+(srv.maxchild>>3))==-1) {
sprintf((char *)buf, "listen(): %s", strerror(errno));
if(!srv.silent)dolog(&defparam, buf);
return -4;
}
}
else
defparam.clisock = sock;
if(!srv.silent && !iscbc){
sprintf((char *)buf, "Accepting connections [%u/%u]", (unsigned)getpid(), (unsigned)pthread_self());
dolog(&defparam, buf);
}
}
if(iscbl){
parsehost(srv.family, cbl_string, (struct sockaddr *)&cbsa);
if((srv.cbsock=srv.so._socket(srv.so.state, SASOCK(&cbsa), SOCK_STREAM, IPPROTO_TCP))==INVALID_SOCKET) {
dolog(&defparam, (unsigned char *)"Failed to allocate connect back socket");
return -6;
}
opt = 1;
srv.so._setsockopt(srv.so.state, srv.cbsock, SOL_SOCKET, SO_REUSEADDR, (char *)&opt, sizeof(int));
#ifdef SO_REUSEPORT
opt = 1;
srv.so._setsockopt(srv.so.state, srv.cbsock, SOL_SOCKET, SO_REUSEPORT, (char *)&opt, sizeof(int));
#endif
setopts(srv.cbsock, srv.cbssockopts);
if(srv.so._bind(srv.so.state, srv.cbsock, (struct sockaddr*)&cbsa, SASIZE(&cbsa))==-1) {
dolog(&defparam, (unsigned char *)"Failed to bind connect back socket");
return -7;
}
if(srv.so._listen(srv.so.state, srv.cbsock, 1 + (srv.maxchild>>4))==-1) {
dolog(&defparam, (unsigned char *)"Failed to listen connect back socket");
return -8;
}
}
srv.fds.fd = sock;
srv.fds.events = POLLIN;
#ifndef _WIN32
pthread_attr_init(&pa);
pthread_attr_setstacksize(&pa,PTHREAD_STACK_MIN + (32768 + srv.stacksize));
pthread_attr_setdetachstate(&pa,PTHREAD_CREATE_DETACHED);
#endif
for (;;) {
for(;;){
while((conf.paused == srv.paused && srv.childcount >= srv.maxchild)){
nlog++;
if(!srv.silent && nlog > 5000) {
sprintf((char *)buf, "Warning: too many connected clients (%d/%d)", srv.childcount, srv.maxchild);
dolog(&defparam, buf);
nlog = 0;
}
usleep(SLEEPTIME);
}
if (iscbc) break;
if (conf.paused != srv.paused) break;
if (srv.fds.events & POLLIN) {
error = srv.so._poll(srv.so.state, &srv.fds, 1, 1000);
}
else {
usleep(SLEEPTIME);
continue;
}
if (error >= 1) break;
if (error == 0) continue;
if (errno != EAGAIN && errno != EINTR) {
sprintf((char *)buf, "poll(): %s/%d", strerror(errno), errno);
if(!srv.silent)dolog(&defparam, buf);
break;
}
}
if((conf.paused != srv.paused) || (error < 0)) break;
error = 0;
if(!isudp){
size = sizeof(defparam.sincr);
if(iscbc){
new_sock=so._socket(so.state, SASOCK(&defparam.sincr), SOCK_STREAM, IPPROTO_TCP);
if(new_sock != INVALID_SOCKET){
setopts(new_sock, srv.cbcsockopts);
parsehost(srv.family, cbc_string, (struct sockaddr *)&defparam.sincr);
if(connectwithpoll(NULL, new_sock,(struct sockaddr *)&defparam.sincr,SASIZE(&defparam.sincr),CONNBACK_TO)) {
so._closesocket(so.state, new_sock);
new_sock = INVALID_SOCKET;
usleep(SLEEPTIME);
continue;
}
if(sockrecvfrom(NULL, new_sock,(struct sockaddr*)&defparam.sincr,buf,1,60*1000) != 1 || *buf!='C') {
so._closesocket(so.state, new_sock);
new_sock = INVALID_SOCKET;
usleep(SLEEPTIME);
continue;
}
}
else {
usleep(SLEEPTIME);
continue;
}
}
else {
new_sock = srv.so._accept(srv.so.state, sock, (struct sockaddr*)&defparam.sincr, &size);
if(new_sock == INVALID_SOCKET){
#ifdef _WIN32
switch(WSAGetLastError()){
case WSAEMFILE:
case WSAENOBUFS:
case WSAENETDOWN:
usleep(SLEEPTIME * 10);
break;
case WSAEINTR:
error = 1;
break;
default:
break;
}
#else
switch (errno){
#ifdef EMFILE
case EMFILE:
#endif
#ifdef ENFILE
case ENFILE:
#endif
#ifdef ENOBUFS
case ENOBUFS:
#endif
#ifdef ENOMEM
case ENOMEM:
#endif
usleep(SLEEPTIME * 10);
break;
default:
break;
}
#endif
nlog++;
if(!srv.silent && (error || nlog > 5000)) {
sprintf((char *)buf, "accept(): %s", strerror(errno));
dolog(&defparam, buf);
nlog = 0;
}
continue;
}
setopts(new_sock, srv.clisockopts);
}
size = sizeof(defparam.sincl);
if(srv.so._getsockname(srv.so.state, new_sock, (struct sockaddr *)&defparam.sincl, &size)){
sprintf((char *)buf, "getsockname(): %s", strerror(errno));
if(!srv.silent)dolog(&defparam, buf);
continue;
}
#ifdef _WIN32
ioctlsocket(new_sock, FIONBIO, &ul);
#else
fcntl(new_sock,F_SETFL,O_NONBLOCK | fcntl(new_sock,F_GETFL));
#endif
lg.l_onoff = 1;
lg.l_linger = conf.timeouts[STRING_L];
srv.so._setsockopt(srv.so.state, new_sock, SOL_SOCKET, SO_LINGER, (char *)&lg, sizeof(lg));
srv.so._setsockopt(srv.so.state, new_sock, SOL_SOCKET, SO_OOBINLINE, (char *)&opt, sizeof(int));
}
else {
srv.fds.events = 0;
}
if(! (newparam = myalloc (sizeof(defparam)))){
if(!isudp) srv.so._closesocket(srv.so.state, new_sock);
defparam.res = 21;
if(!srv.silent)dolog(&defparam, (unsigned char *)"Memory Allocation Failed");
usleep(SLEEPTIME);
continue;
};
*newparam = defparam;
if(defparam.hostname)newparam->hostname=(unsigned char *)mystrdup((char *)defparam.hostname);
clearstat(newparam);
if(!isudp) newparam->clisock = new_sock;
#ifndef STDMAIN
if(makefilters(&srv, newparam) > CONTINUE){
freeparam(newparam);
continue;
}
#endif
newparam->prev = newparam->next = NULL;
error = 0;
pthread_mutex_lock(&srv.counter_mutex);
if(!srv.child){
srv.child = newparam;
}
else {
newparam->next = srv.child;
srv.child = srv.child->prev = newparam;
}
#ifdef _WIN32
#ifndef _WINCE
h = (HANDLE)_beginthreadex((LPSECURITY_ATTRIBUTES )NULL, (unsigned)(16384 + srv.stacksize), (void *)threadfunc, (void *) newparam, 0, &thread);
#else
h = (HANDLE)CreateThread((LPSECURITY_ATTRIBUTES )NULL, (unsigned)(16384 + srv.stacksize), (void *)threadfunc, (void *) newparam, 0, &thread);
#endif
srv.childcount++;
if (h) {
newparam->threadid = (unsigned)thread;
CloseHandle(h);
}
else {
sprintf((char *)buf, "_beginthreadex(): %s", _strerror(NULL));
if(!srv.silent)dolog(&defparam, buf);
error = 1;
}
#else
error = pthread_create(&thread, &pa, threadfunc, (void *)newparam);
srv.childcount++;
if(error){
sprintf((char *)buf, "pthread_create(): %s", strerror(error));
if(!srv.silent)dolog(&defparam, buf);
}
else {
newparam->threadid = (unsigned)thread;
}
#endif
pthread_mutex_unlock(&srv.counter_mutex);
if(error) freeparam(newparam);
memset(&defparam.sincl, 0, sizeof(defparam.sincl));
memset(&defparam.sincr, 0, sizeof(defparam.sincr));
if(isudp) while(!srv.fds.events)usleep(SLEEPTIME);
}
#ifndef STDMAIN
pthread_mutex_lock(&config_mutex);
if(srv.next)srv.next->prev = srv.prev;
if(srv.prev)srv.prev->next = srv.next;
else conf.services = srv.next;
pthread_mutex_unlock(&config_mutex);
#endif
if(!srv.silent) srv.logfunc(&defparam, (unsigned char *)"Exiting thread");
srvfree(&srv);
#ifndef _WIN32
pthread_attr_destroy(&pa);
#endif
if(defparam.hostname)myfree(defparam.hostname);
if(cbc_string)myfree(cbc_string);
if(cbl_string)myfree(cbl_string);
if(fp) fclose(fp);
return 0;
}
void srvinit(struct srvparam * srv, struct clientparam *param){
memset(srv, 0, sizeof(struct srvparam));
srv->version = conf.version + 1;
srv->paused = conf.paused;
srv->logfunc = havelog?conf.logfunc:lognone;
srv->noforce = conf.noforce;
srv->logformat = conf.logformat? (unsigned char *)mystrdup((char *)conf.logformat) : NULL;
srv->authfunc = conf.authfunc;
srv->usentlm = 0;
srv->maxchild = conf.maxchild;
srv->backlog = conf.backlog;
srv->stacksize = conf.stacksize;
srv->time_start = time(NULL);
if(havelog && conf.logtarget){
srv->logtarget = (unsigned char *)mystrdup((char *)conf.logtarget);
}
srv->srvsock = INVALID_SOCKET;
srv->logdumpsrv = conf.logdumpsrv;
srv->logdumpcli = conf.logdumpcli;
srv->cbsock = INVALID_SOCKET;
srv->needuser = 1;
#ifdef WITHSPLICE
srv->usesplice = 1;
#endif
memset(param, 0, sizeof(struct clientparam));
param->srv = srv;
param->version = srv->version;
param->paused = srv->paused;
param->remsock = param->clisock = param->ctrlsock = param->ctrlsocksrv = INVALID_SOCKET;
*SAFAMILY(¶m->req) = *SAFAMILY(¶m->sinsl) = *SAFAMILY(¶m->sinsr) = *SAFAMILY(¶m->sincr) = *SAFAMILY(¶m->sincl) = AF_INET;
pthread_mutex_init(&srv->counter_mutex, NULL);
srv->intsa = conf.intsa;
srv->extsa = conf.extsa;
#ifndef NOIPV6
srv->extsa6 = conf.extsa6;
#endif
srv->so = so;
}
void srvinit2(struct srvparam * srv, struct clientparam *param){
if(srv->logformat){
char *s;
if(*srv->logformat == '-' && (s = strchr((char *)srv->logformat + 1, '+')) && s[1]){
unsigned char* logformat = srv->logformat;
*s = 0;
srv->nonprintable = (unsigned char *)mystrdup((char *)srv->logformat + 1);
srv->replace = s[1];
srv->logformat = (unsigned char *)mystrdup(s + 2);
*s = '+';
myfree(logformat);
}
}
memset(¶m->sinsl, 0, sizeof(param->sinsl));
memset(¶m->sinsr, 0, sizeof(param->sinsr));
memset(¶m->req, 0, sizeof(param->req));
*SAFAMILY(¶m->sinsl) = AF_INET;
*SAFAMILY(¶m->sinsr) = AF_INET;
*SAFAMILY(¶m->req) = AF_INET;
param->sincr = param->sincl = srv->intsa;
#ifndef NOIPV6
if (srv->family == 6 || srv->family == 64) param->sinsr = srv->extsa6;
else
#endif
param->sinsr = srv->extsa;
}
void srvfree(struct srvparam * srv){
if(srv->srvsock != INVALID_SOCKET) so._closesocket(srv->so.state, srv->srvsock);
srv->srvsock = INVALID_SOCKET;
if(srv->cbsock != INVALID_SOCKET) so._closesocket(srv->so.state, srv->cbsock);
srv->cbsock = INVALID_SOCKET;
srv->service = S_ZOMBIE;
while(srv->child) usleep(SLEEPTIME * 100);
#ifndef STDMAIN
if(srv->filter){
while(srv->nfilters){
srv->nfilters--;
if(srv->filter[srv->nfilters].filter_close){
(*srv->filter[srv->nfilters].filter_close)(srv->filter[srv->nfilters].data);
}