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ict/client/ewsc/net/netlib/net_api.cpp
2026-01-23 08:57:55 +08:00

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#include <fcntl.h>
#include <sys/stat.h>
#if defined(_UNIX_)
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <netdb.h>
#include <sys/socket.h>
#include <time.h>
#include <stdarg.h>
#elif defined(WIN32)
#include <direct.h>
#include <io.h>
#endif
#include "netapi.h"
//#include "afert.h"
void _byte_swap(int ilen,void *addr)
{
if( (ilen%2!=0)||(ilen<=0) ) //字节数应是2的整数倍
return;
unsigned char sp,*src;
src = (unsigned char *)addr;
for(int i = 0;i<ilen/2;i++)
{
BYTE_SWAP(i,ilen-1-i);//例对整数nbyte_swap(sizeof(n),n),b0--b3,b1--b2.
}
return;
}
void _get_host_name(char *name)
{
char host[100];
gethostname(host,99);
char *host1 = strchr(host,'.');
if(host1!=NULL) *host1 = 0;
if(strlen(host)>=HOSTNAMELEN) host[0] = 0;
else strcpy(name,host);
}
int _get_last_error()
{
#if defined (WIN32)
return WSAGetLastError();
#elif defined (_UNIX_)
#if defined (__osf__)
return _Geterrno();
#elif defined (_SOLARIS)
int ret = errno;
return errno;
#endif
#endif
}
void _delay_time(int n) //usec
{
#if defined (WIN32)
Sleep(n/1000);
#elif defined (_UNIX_)
struct timeval tt;
int ret;
while(TRUE)
{
tt.tv_sec=n/1000000;
tt.tv_usec=n%1000000;
ret=select(0,0,0,0,&tt);
if(ret<0){
if(_get_last_error()==EINTR)
{
n=n/2;
if(n>=50000) continue;
}
}
break;
}
#endif
}
/*
char _get_chan_status(int groupno,int chno,char mainFepFlag)
{
if(groupno<0 || groupno>=GROUP_MAX) return CHANSTOP;
if(chno<0 || chno>=CHANNUMS) return CHANSTOP;
char name[HOSTNAMELEN];
_get_host_name(name);
HEAD txhead,rxhead;
strcpy(txhead.src.host,name);
strcpy(txhead.src.user,"FEP");
txhead.cmdtype = ChanDataGram;
txhead.userdata1 = chno;
txhead.userdata2 = 0;
txhead.len = 0;
NetStatus cfg;
char* main = cfg.GetMainServerHost(groupno,FEP_SERVER);
if(mainFepFlag)
{
if(strcmp(main,"")==0) return CHANSTOP;
int n = cfg.GetHostNo(groupno,main);
Tcpip link(n,NET_TYPE_CMD,CMDPORT);
if(link.TxHead(&txhead)==FALSE) return CHANSTOP;
if(link.RxHead(&rxhead)==FALSE) return CHANSTOP;
if(rxhead.userdata1!=chno) return CHANSTOP;
return rxhead.userdata2;
}
else
{
int8u status[SERVER_NODE_MAX];
for(int i=0; i<SERVER_NODE_MAX; i++)
status[i] = CHANSTOP;
for(i=0; i<SERVER_NODE_MAX; i++)
{
char* hostname = cfg.GetHostName(groupno,i,FEP_SERVER);
if(cfg.GetHostRstate(groupno,hostname)<=HOST_STATUS_STOP) continue;
if(strcmp(hostname,"")==0) continue;
if(strcmp(hostname,main)==0) continue;
int n = cfg.GetHostNo(groupno,hostname);
Tcpip link(n,NET_TYPE_CMD,CMDPORT);
if(link.TxHead(&txhead)==FALSE) continue;
if(link.RxHead(&rxhead)==FALSE) continue;
if(rxhead.userdata2==CHANRUN) return CHANRUN;
status[i] = rxhead.userdata2;
}
for(i=0; i<SERVER_NODE_MAX; i++)
if(status[i]==CHANRATE) return CHANRATE;
for(i=0; i<SERVER_NODE_MAX; i++)
if(status[i]==CHANUNSYN) return CHANUNSYN;
for(i=0; i<SERVER_NODE_MAX; i++)
if(status[i]==CHANSEARCH) return CHANSEARCH;
}
return CHANSTOP;
}
*/