File: [local] / OpenXM / src / kan96xx / plugin / mytcpio.c (download)
Revision 1.9, Wed Oct 23 08:42:22 2002 UTC (21 years, 11 months ago) by takayama
Branch: MAIN
CVS Tags: RELEASE_1_2_2 Changes since 1.8: +3 -1
lines
A bug on the null password is fixed.
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/* $OpenXM: OpenXM/src/kan96xx/plugin/mytcpio.c,v 1.9 2002/10/23 08:42:22 takayama Exp $ */
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <netdb.h>
#include <setjmp.h>
/* -lnsl -lsocket /usr/ucblib/libucb.a */
#include "ox_kan.h"
/*
MyEnv_oxmisc is used in oxmisc.c.
It cannot be put in oxmisc.c for the case of sun.
*/
#if defined(sun)
int MyEnv_oxmisc[2000];
#else
#if defined(__CYGWIN__)
sigjmp_buf MyEnv_oxmisc; /* may cause a trouble in Solaris. */
#else
jmp_buf MyEnv_oxmisc; /* may cause a trouble in Solaris. */
#endif
#endif
#define READBUFSIZE 10000
#define MAX_LISTEN_QUEUE 3
static void errorMsg1s(char *s) {
fprintf(stderr,"%s\n",s);
}
#define SET_TCPIOERROR { if (TcpioError == NULL) TcpioError = stdout; }
FILE *TcpioError = NULL;
int OpenedSocket = 0;
extern int Quiet;
socketOpen(char *serverName,int portNumber) {
static struct hostent *myhost;
static struct sockaddr_in me;
static int s_waiting;
static int on;
extern int errno;
int tt;
SET_TCPIOERROR;
fprintf(TcpioError,"Hello from open. serverName is %s and portnumber is %d\n",
serverName,portNumber);
if ((myhost = gethostbyname(serverName)) == NULL) {
errorMsg1s("Bad server name.");
return(-1);
}
bzero((char *)&me,sizeof(me));
me.sin_family = AF_INET;
me.sin_port = htons(portNumber);
bcopy(myhost->h_addr,
&me.sin_addr,myhost->h_length);
if ((s_waiting = socket(AF_INET,SOCK_STREAM,0)) < 0) {
errorMsg1s("Socket allocation is failed.");
return(-1);
}
on=1; setsockopt(s_waiting,SOL_SOCKET,SO_REUSEADDR,&on,sizeof(on));
/* important */
if ((tt = bind(s_waiting,(struct sockaddr *) &me,sizeof(me))) == -1) {
fprintf(TcpioError,"Bind error. Error no is %d. See /usr/include/sys/errno.h. (asm/errno.h)\n",errno);
errorMsg1s("cannot bind");
return(-1);
}
/* printf("bind returns %d\n",tt); */
tt = sizeof(me);
if (getsockname(s_waiting,(struct sockaddr *)&me,&tt) < 0) {
fprintf(TcpioError,"getsockname error. Error no is %d. See /usr/include/sys/errno.h (asm/errno.h).\n",errno);
errorMsg1s("cannot getsockname");
return(-1);
}
if (listen(s_waiting,MAX_LISTEN_QUEUE) < 0) {
errorMsg1s("Listen failed");
return(-1);
}
fprintf(TcpioError,"Done the initialization. port =%d\n",ntohs(me.sin_port));
OpenedSocket = ntohs(me.sin_port);
return(s_waiting);
}
socketAccept(int snum) {
int s, news;
SET_TCPIOERROR;
s = snum;
fprintf(TcpioError,"Trying to accept... "); fflush(TcpioError);
if ((news = accept(s,NULL,NULL)) < 0) {
errorMsg1s("Error in accept.");
return(-1);
}
fprintf(TcpioError,"Accepted.\n"); fflush(TcpioError);
if (close(s) < 0) {
errorMsg1s("Error in closing the old socket.");
return(-1);
}
return(news);
}
socketAcceptLocal(int snum) {
int s, news;
struct sockaddr peer;
int len;
int i;
SET_TCPIOERROR;
s = snum;
fprintf(TcpioError,"Trying to accept from localhost... "); fflush(TcpioError);
len = sizeof(struct sockaddr);
if ((news = accept(s,&peer,&len)) < 0) {
errorMsg1s("Error in accept.");
return(-1);
}
len = sizeof(struct sockaddr);
getpeername(news,&peer,&len);
printf("len= %d\n",len);
for (i=0; i<len; i++) {
printf(" %x ",peer.sa_data[i]);
}
printf("\n");
if (peer.sa_data[2] == 0x7f && peer.sa_data[3] == 0 &&
peer.sa_data[4] == 0 && peer.sa_data[5] == 1) {
fprintf(stderr,"Authentication: localhost is allowed to be accepted.\n");
}else{
errorMsg1s("Authentication: The connection is not from the localhost.");
close(s);
fprintf(stderr,"The connection is refused.");
return(-1);
}
fprintf(TcpioError,"Accepted.\n"); fflush(TcpioError);
if (close(s) < 0) {
errorMsg1s("Error in closing the old socket.");
return(-1);
}
return(news);
}
/* It does not close the socket for listening. */
socketAcceptLocal2(int snum) {
int s, news;
struct sockaddr peer;
int len;
int i;
SET_TCPIOERROR;
s = snum;
fprintf(TcpioError,"Trying to accept from localhost... "); fflush(TcpioError);
len = sizeof(struct sockaddr);
if ((news = accept(s,&peer,&len)) < 0) {
errorMsg1s("Error in accept.");
return(-1);
}
len = sizeof(struct sockaddr);
getpeername(news,&peer,&len);
printf("len= %d\n",len);
for (i=0; i<len; i++) {
printf(" %x ",peer.sa_data[i]);
}
printf("\n");
if (peer.sa_data[2] == 0x7f && peer.sa_data[3] == 0 &&
peer.sa_data[4] == 0 && peer.sa_data[5] == 1) {
fprintf(stderr,"Authentication: localhost is allowed to be accepted.\n");
}else{
errorMsg1s("Authentication: The connection is not from the localhost.");
fprintf(stderr,"The connection is refused.");
return(-1);
}
fprintf(TcpioError,"Accepted.\n"); fflush(TcpioError);
return(news);
}
int oxSocketSelect0(int fd,int t) {
fd_set readfds;
struct timeval timeout;
int debug = 0;
extern int errno;
SET_TCPIOERROR;
FD_ZERO(&readfds);
FD_SET(fd,&readfds);
timeout.tv_sec = 0;
timeout.tv_usec = (long) t;
if (t >= 0) {
if (debug) {printf("select t>=0 for fd = %d\n",fd); fflush(NULL);}
if (select(fd+1,&readfds,(fd_set *)NULL,(fd_set *)NULL,&timeout)<0) {
/* It must be fd+1 !, Not fd. */
fprintf(TcpioError,"select (non-block) error. Error no is %d. See /usr/include/sys/errno.h (asm/errno.h).\n",errno);
errorMsg1s("oxSocketSelect0() : select failed.");
return(0);
}
if(debug){printf("Return from select t>=0 for fd = %d\n",fd);fflush(NULL);}
}else{ /* block */
if (select(fd+1,&readfds,(fd_set *)NULL,(fd_set *)NULL,(struct timeval *)NULL)<0) {
fprintf(TcpioError,"select (block) error. Error no is %d. See /usr/include/sys/errno.h (asm/errno.h).\n",errno);
errorMsg1s("socketSelect0() : select failed.");
return(0);
}
}
if (FD_ISSET(fd,&readfds)) return(1);
else return(0);
}
oxSocketMultiSelect(int sid[],int size,int t,int result[])
{
int i,fd,p;
fd_set readfds;
struct timeval timeout;
int isdata = 0;
extern errno;
SET_TCPIOERROR;
FD_ZERO(&readfds);
timeout.tv_sec = 0;
timeout.tv_usec = (long)t;
fd = 0;
for (i=0; i<size; i++) {
if (sid[i] >= 0) {
p = sid[i];
if (p > fd) fd = p;
FD_SET(p,&readfds);
/* printf("p = %d, fd=%d",p,fd); */
}
}
/* printf("MultiSelect..\n"); fflush(NULL); */
if (t >= 0) {
if (select(fd+1,&readfds,(fd_set *)NULL,(fd_set *)NULL,&timeout)<0) {
/* It must be fd+1 !, Not fd. */
fprintf(TcpioError,"Select error. Error no is %d. See /usr/include/sys/errno.h (asm/errno.h).\n",errno);
errorMsg1s("oxSocketMultiSelect() : select failed.");
return(0);
}
}else{ /* block */
if (select(fd+1,&readfds,(fd_set *)NULL,(fd_set *)NULL,(struct timeval *)NULL)<0) {
fprintf(TcpioError,"Select error. Error no is %d. See /usr/include/sys/errno.h (asm/errno.h).\n",errno);
errorMsg1s("oxSocketMultiSelect() : (block) select failed.");
return(0);
}
}
/* printf("Done. MultiSelect.\n"); fflush(NULL); */
for (i=0; i<size; i++) {
p = sid[i];
if ((sid[i] >=0) && FD_ISSET(p,&readfds)) {
result[i] = 1; isdata = 1;
}else{
result[i] = 0;
}
}
return(isdata);
}
socketConnect(char *serverName,int portNumber) {
struct hostent *servhost;
struct sockaddr_in server;
int socketid;
int on;
SET_TCPIOERROR;
if ((servhost = gethostbyname(serverName)) == NULL) {
errorMsg1s("bad server name.\n");
return(-1);
}
bzero((char *)&server,sizeof(server));
server.sin_family = AF_INET;
server.sin_port = htons(portNumber);
bcopy(servhost->h_addr,
(char *)&server.sin_addr,servhost->h_length);
if ((socketid = socket(AF_INET,SOCK_STREAM,0)) <0) {
errorMsg1s("socket allocation is failed.\n");
return(-1);
}
/* on=1; setsockopt(socketid,SOL_SOCKET,SO_REUSEADDR,&on,sizeof(on)); */
if (!Quiet) {
fprintf(TcpioError,"Trying to connect port %d, ip=%x\n",ntohs(server.sin_port),server.sin_addr);
}
if (connect(socketid,(struct sockaddr *)&server,sizeof(server)) == -1) {
errorMsg1s("cannot connect");
return(-1);
}
if (!Quiet) fprintf(TcpioError,"connected.\n");
return(socketid);
}
socketConnectWithPass(char *servername,int port,char *pass)
{
int fd;
int m;
SET_TCPIOERROR;
fd = socketConnect(servername,port);
if ((pass == NULL) && (fd >= 0)) return fd;
if ((pass == NULL) && (fd < 0)) return -1;
if (fd >= 0) {
m = write(fd,pass,strlen(pass)+1);
if (m != strlen(pass)+1) {
fprintf(TcpioError,"Fail to send password to fd=%d.\n",fd);
return(-1);
}
return(fd);
}else{
return(-1);
}
}