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HAM Radio 3
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hamradioversion3.0examsandprograms1992.iso
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9q920411
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main.c
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C/C++ Source or Header
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1992-04-06
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13KB
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671 lines
/* Main-level NOS program:
* initialization
* keyboard processing
* generic user commands
*
* Copyright 1991 Phil Karn, KA9Q
*/
#include <stdio.h>
#include <time.h>
#if defined(__TURBOC__) && defined(MSDOS)
#include <io.h>
#include <conio.h>
#endif
#include "global.h"
#ifdef ANSIPROTO
#include <stdarg.h>
#endif
#include "mbuf.h"
#include "timer.h"
#include "proc.h"
#include "iface.h"
#include "ip.h"
#include "tcp.h"
#include "udp.h"
#include "ax25.h"
#include "kiss.h"
#include "enet.h"
#include "netrom.h"
#include "ftpcli.h"
#include "telnet.h"
#include "tty.h"
#include "session.h"
#include "hardware.h"
#include "usock.h"
#include "socket.h"
#include "cmdparse.h"
#include "commands.h"
#include "daemon.h"
#include "devparam.h"
#include "domain.h"
#include "files.h"
#include "main.h"
#include "remote.h"
#include "trace.h"
extern struct cmds Cmds[],Startcmds[],Stopcmds[],Attab[];
#ifndef MSDOS /* PC uses F-10 key always */
static char Escape = 0x1d; /* default escape character is ^] */
#endif
char Badhost[] = "Unknown host %s\n";
char *Hostname;
char Nospace[] = "No space!!\n"; /* Generic malloc fail message */
struct proc *Cmdpp;
struct proc *Display;
int main_exit = FALSE; /* from main program (flag) */
static char Prompt[] = "net> ";
static FILE *Logfp;
static time_t StartTime; /* time that NOS was started */
static int Verbose;
int
main(argc,argv)
int argc;
char *argv[];
{
char *inbuf,*intmp;
FILE *fp;
struct daemon *tp;
struct mbuf *bp;
int c;
StartTime = time(&StartTime);
while((c = getopt(argc,argv,"s:d:bv")) != EOF){
switch(c){
case 's': /* Number of sockets */
Nusock = atoi(optarg);
break;
case 'd': /* Root directory for various files */
initroot(optarg);
break;
#ifdef __TURBOC__
case 'b': /* Use BIOS for screen output */
directvideo = 0;
break;
#endif
case 'v':
Verbose = 1;
break;
}
}
kinit();
ipinit();
ioinit();
sockinit();
Cmdpp = mainproc("cmdintrp");
Sessions = (struct session *)callocw(Nsessions,sizeof(struct session));
Command = Lastcurr = newsession("command interpreter",COMMAND,1);
Display = newproc("display",250,display,0,NULLCHAR,NULL,0);
tprintf("KA9Q NOS version %s\n",Version);
tprintf("Copyright 1992 by Phil Karn, KA9Q\n");
rflush();
/* Start background Daemons */
for(tp=Daemons;;tp++){
if(tp->name == NULLCHAR)
break;
newproc(tp->name,tp->stksize,tp->fp,0,NULLCHAR,NULL,0);
}
Encap.txproc = newproc("encap tx",512,if_tx,0,&Encap,NULL,0);
if(optind < argc){
/* Read startup file named on command line */
if((fp = fopen(argv[optind],READ_TEXT)) == NULLFILE)
tprintf("Can't read config file %s: %s\n",
argv[optind],sys_errlist[errno]);
} else {
fp = fopen(Startup,READ_TEXT);
}
if(fp != NULLFILE){
inbuf = mallocw(BUFSIZ);
intmp = mallocw(BUFSIZ);
while(fgets(inbuf,BUFSIZ,fp) != NULLCHAR){
strcpy(intmp,inbuf);
if(Verbose)
tprintf("%s",intmp);
if(cmdparse(Cmds,inbuf,NULL) != 0){
tprintf("input line: %s",intmp);
}
}
fclose(fp);
free(inbuf);
free(intmp);
}
/* Now loop forever, processing commands */
for(;;){
tprintf(Prompt);
usflush(Command->output);
if(recv_mbuf(Command->input,&bp,0,NULLCHAR,0) != -1){
(void)cmdparse(Cmds,bp->data,Lastcurr);
free_p(bp);
}
}
}
/* Keyboard input process */
void
keyboard(i,v1,v2)
int i;
void *v1;
void *v2;
{
int c;
struct mbuf *bp;
/* Keyboard process loop */
for(;;){
c = kbread();
#ifndef MSDOS
if(c == Escape && Escape != 0)
c = -2;
#endif
if(c == -2 && Current != Command){
/* Save current tty mode and set cooked */
swapscreen(Current,Command);
Lastcurr = Current;
Current = Command;
}
Current->row = MOREROWS;
psignal(&Current->row,1);
if(c >= 0){
/* If the screen driver was in morewait state, this char
* has woken him up. Toss it so it doesn't also get taken
* as normal input. If the char was a command escape,
* however, it will be accepted; this gives the user
* a way out of lengthy output.
*/
if(!Current->morewait
&& (bp = ttydriv(Current,(char)c)) != NULLBUF){
send_mbuf(Current->input,bp,0,NULLCHAR,0);
}
}
}
}
/* Standard commands called from main */
int
dodelete(argc,argv,p)
int argc;
char *argv[];
void *p;
{
int i;
for(i=1;i < argc; i++){
if(unlink(argv[i]) == -1){
tprintf("Can't delete %s: %s\n",
argv[i],sys_errlist[errno]);
}
}
return 0;
}
int
dorename(argc,argv,p)
int argc;
char *argv[];
void *p;
{
if(rename(argv[1],argv[2]) == -1)
tprintf("Can't rename: %s\n",sys_errlist[errno]);
return 0;
}
int
doexit(argc,argv,p)
int argc;
char *argv[];
void *p;
{
int i;
time_t StopTime;
StopTime = time(&StopTime);
main_exit = TRUE; /* let everyone know we're out of here */
reset_all();
if(Dfile_updater != NULLPROC)
alert(Dfile_updater,0); /* don't wait for timeout */
for(i=0;i<100;i++)
pwait(NULL); /* Allow tasks to complete */
shuttrace();
log(-1,"NOS was stopped at %s", ctime(&StopTime));
if(Logfp){
fclose(Logfp);
Logfp = NULLFILE;
}
iostop();
exit(0);
return 0; /* To satisfy lint */
}
int
dohostname(argc,argv,p)
int argc;
char *argv[];
void *p;
{
if(argc < 2)
tprintf("%s\n",Hostname);
else {
struct iface *ifp;
char *name;
if((ifp = if_lookup(argv[1])) != NULLIF){
if((name = resolve_a(ifp->addr, FALSE)) == NULLCHAR){
tprintf("Interface address not resolved\n");
return 1;
} else {
if(Hostname != NULLCHAR)
free(Hostname);
Hostname = name;
/* remove trailing dot */
if ( Hostname[strlen(Hostname)] == '.' ) {
Hostname[strlen(Hostname)] = '\0';
}
tprintf("Hostname set to %s\n", name );
}
} else {
if(Hostname != NULLCHAR)
free(Hostname);
Hostname = strdup(argv[1]);
}
}
return 0;
}
int
dolog(argc,argv,p)
int argc;
char *argv[];
void *p;
{
static char *logname;
if(argc < 2){
if(Logfp)
tprintf("Logging to %s\n",logname);
else
tprintf("Logging off\n");
return 0;
}
if(Logfp){
log(-1,"NOS log closed");
fclose(Logfp);
Logfp = NULLFILE;
free(logname);
logname = NULLCHAR;
}
if(strcmp(argv[1],"stop") != 0){
logname = strdup(argv[1]);
Logfp = fopen(logname,APPEND_TEXT);
log(-1,"NOS was started at %s", ctime(&StartTime));
#ifdef MSDOS
log(-1,"NOS load information: CS=0x%04x DS=0x%04x", _CS, _DS);
#endif
}
return 0;
}
int
dohelp(argc,argv,p)
int argc;
char *argv[];
void *p;
{
register struct cmds *cmdp;
int i;
char buf[66];
tprintf("Main commands:\n");
memset(buf,' ',sizeof(buf));
buf[64] = '\n';
buf[65] = '\0';
for(i=0,cmdp = Cmds;cmdp->name != NULL;cmdp++,i = (i+1)%4){
strncpy(&buf[i*16],cmdp->name,strlen(cmdp->name));
if(i == 3){
tprintf(buf);
memset(buf,' ',sizeof(buf));
buf[64] = '\n';
buf[65] = '\0';
}
}
if(i != 0)
tprintf(buf);
return 0;
}
/* Attach an interface
* Syntax: attach <hw type> <I/O address> <vector> <mode> <label> <bufsize> [<speed>]
*/
int
doattach(argc,argv,p)
int argc;
char *argv[];
void *p;
{
return subcmd(Attab,argc,argv,p);
}
/* Manipulate I/O device parameters */
int
doparam(argc,argv,p)
int argc;
char *argv[];
void *p;
{
register struct iface *ifp;
int param;
int32 val;
if((ifp = if_lookup(argv[1])) == NULLIF){
tprintf("Interface \"%s\" unknown\n",argv[1]);
return 1;
}
if(ifp->ioctl == NULL){
tprintf("Not supported\n");
return 1;
}
if(argc < 3){
for(param=1;param<=16;param++){
val = (*ifp->ioctl)(ifp,param,FALSE,0L);
if(val != -1)
tprintf("%s: %ld\n",parmname(param),val);
}
return 0;
}
if((param = devparam(argv[2])) == -1){
tprintf("Unknown parameter %s\n",argv[2]);
return 1;
}
if(argc < 4){
/* Read specific parameter */
val = (*ifp->ioctl)(ifp,param,FALSE,0L);
if(val == -1){
tprintf("Parameter %s not supported\n",argv[2]);
} else {
tprintf("%s: %ld\n",parmname(param),val);
}
return 0;
}
/* Set parameter */
(*ifp->ioctl)(ifp,param,TRUE,atol(argv[3]));
return 0;
}
/* Display or set IP interface control flags */
int
domode(argc,argv,p)
int argc;
char *argv[];
void *p;
{
register struct iface *ifp;
if((ifp = if_lookup(argv[1])) == NULLIF){
tprintf("Interface \"%s\" unknown\n",argv[1]);
return 1;
}
if(argc < 3){
tprintf("%s: %s\n",ifp->name,
(ifp->flags & CONNECT_MODE) ? "VC mode" : "Datagram mode");
return 0;
}
switch(argv[2][0]){
case 'v':
case 'c':
case 'V':
case 'C':
ifp->flags = CONNECT_MODE;
break;
case 'd':
case 'D':
ifp->flags = DATAGRAM_MODE;
break;
default:
tprintf("Usage: %s [vc | datagram]\n",argv[0]);
return 1;
}
return 0;
}
#ifndef MSDOS
int
doescape(argc,argv,p)
int argc;
char *argv[];
void *p;
{
if(argc < 2)
tprintf("0x%x\n",Escape);
else
Escape = *argv[1];
return 0;
}
#endif MSDOS
/* Generate system command packet. Synopsis:
* remote [-p port#] [-k key] [-a hostname] <hostname> reset|exit|kickme
*/
int
doremote(argc,argv,p)
int argc;
char *argv[];
void *p;
{
struct sockaddr_in fsock;
int s,c;
char *data,x;
int16 port,len;
char *key = NULLCHAR;
int klen;
int32 addr = 0;
char *cmd,*host;
port = IPPORT_REMOTE; /* Set default */
optind = 1; /* reinit getopt() */
while((c = getopt(argc,argv,"a:p:k:s:")) != EOF){
switch(c){
case 'a':
addr = resolve(optarg);
break;
case 'p':
port = atoi(optarg);
break;
case 'k':
key = optarg;
klen = strlen(key);
break;
case 's':
Rempass = strdup(optarg);
return 0; /* Only set local password */
}
}
if(optind > argc - 2){
tprintf("Insufficient args\n");
return -1;
}
host = argv[optind++];
cmd = argv[optind];
if((s = socket(AF_INET,SOCK_DGRAM,0)) == -1){
tprintf("socket failed\n");
return 1;
}
len = 1;
/* Did the user include a password or kickme target? */
if(addr != 0)
len += sizeof(int32);
if(key != NULLCHAR)
len += klen;
if(len == 1)
data = &x;
else
data = mallocw(len);
fsock.sin_family = AF_INET;
fsock.sin_addr.s_addr = resolve(host);
fsock.sin_port = port;
switch(cmd[0]){
case 'r':
data[0] = SYS_RESET;
if(key != NULLCHAR)
strncpy(&data[1],key,klen);
break;
case 'e':
data[0] = SYS_EXIT;
if(key != NULLCHAR)
strncpy(&data[1],key,klen);
break;
case 'k':
data[0] = KICK_ME;
if(addr != 0)
put32(&data[1],addr);
break;
default:
tprintf("Unknown command %s\n",cmd);
goto cleanup;
}
/* Form the command packet and send it */
if(sendto(s,data,len,0,(char *)&fsock,sizeof(fsock)) == -1){
tprintf("sendto failed: %s\n",sys_errlist[errno]);
goto cleanup;
}
cleanup:
if(data != &x)
free(data);
close_s(s);
return 0;
}
int
domore(argc,argv,p)
int argc;
char *argv[];
void *p;
{
struct session *sp;
FILE *fp;
char buf[81];
int row;
if((sp = newsession(argv[1],MORE,1)) == NULLSESSION){
return -1;
}
/* Put tty into raw mode so single-char responses will work */
sp->ttystate.echo = sp->ttystate.edit = 0;
if((fp = fopen(argv[1],READ_TEXT)) == NULLFILE){
tprintf("Can't read %s\n",argv[1]);
keywait(NULLCHAR,1);
freesession(sp);
return 1;
}
row = MOREROWS;
while(fgets(buf,sizeof(buf),fp),!feof(fp)){
tprintf("%s",buf);
if(--row == 0){
row = keywait("--More--",0);
switch(row){
case -1:
case 'q':
case 'Q':
goto done;
case '\n':
case '\r':
row = 1;
break;
case ' ':
default:
row = MOREROWS;
}
}
}
done: fclose(fp);
keywait(NULLCHAR,1);
freesession(sp);
return 0;
}
/* No-op command */
int
donothing(argc,argv,p)
int argc;
char *argv[];
void *p;
{
return 0;
}
/* Log messages of the form
* Tue Jan 31 00:00:00 1987 44.64.0.7:1003 open FTP
*/
#if defined(ANSIPROTO)
void
log(int s,char *fmt, ...)
{
va_list ap;
char *cp;
long t;
int i;
struct sockaddr fsocket;
#ifdef MSDOS
int fd;
#endif
if(Logfp == NULLFILE)
return;
time(&t);
cp = ctime(&t);
rip(cp);
i = SOCKSIZE;
fprintf(Logfp,"%s",cp);
if(getpeername(s,(char *)&fsocket,&i) != -1)
fprintf(Logfp," %s",psocket(&fsocket));
fprintf(Logfp," - ");
va_start(ap,fmt);
vfprintf(Logfp,fmt,ap);
va_end(ap);
fprintf(Logfp,"\n");
fflush(Logfp);
#ifdef MSDOS
/* MS-DOS doesn't really flush files until they're closed */
fd = fileno(Logfp);
if((fd = dup(fd)) != -1)
close(fd);
#endif
}
#else
/*VARARGS2*/
void
log(s,fmt,arg1,arg2,arg3,arg4,arg5)
int s;
char *fmt;
int arg1,arg2,arg3,arg4,arg5;
{
char *cp;
long t;
int fd,i;
struct sockaddr fsocket;
if(Logfp == NULLFILE)
return;
time(&t);
cp = ctime(&t);
rip(cp);
i = SOCKSIZE;
fprintf(Logfp,"%s",cp);
if(getpeername(s,(char *)&fsocket,&i) != -1)
fprintf(Logfp," %s",psocket(&fsocket));
fprintf(Logfp," - ");
fprintf(Logfp,fmt,arg1,arg2,arg3,arg4,arg5);
fprintf(Logfp,"\n");
fflush(Logfp);
#ifdef MSDOS
/* MS-DOS doesn't really flush files until they're closed */
fd = fileno(Logfp);
if((fd = dup(fd)) != -1)
close(fd);
#endif
}
#endif