Frozen Fish 1: Amiga/FrozenFish-Apr94.iso/bbs/alib/d0xx/d026/c-kermit.lha/C-kermit/src/ckicon.c

C/C++ Source or Header | 1986-06-16 | 5.8 KB | 179 lines

char *connv = "Connect Command, V4.2(007)+1 9 March 85";

/*  C K A C O N  --  Dumb terminal connection to remote system, for AMIGA  */
/*
 Adapted from the VMS C-Kermit connect module, which was:

 Adapted from the Unix C-Kermit connect module by S. Rubenstein for systems
 without fork().  This version of conect() uses contti(&c, &src) to return
 when a character is available from either the console or the comm line,
 to allow sending/receiving without breaking connection.
*/

#include <ctype.h>            /* Isupper & Iscntrl  (fnf) */

#include "ckcker.h"
#include "ckcdeb.h"

extern int local, speed, escape, duplex, parity, flow, seslog, mdmtyp;
extern char ttname[], sesfil[];

int i, active;                          /* Variables global to this module */
char *chstr();

#define LBUFL 100                       /* Line buffer */
char lbuf[LBUFL];


/*  C O N E C T  --  Perform terminal connection  */

conect() {
    int c;                      /* c is a character, but must be signed
                                   integer to pass thru -1, which is the
                                   modem disconnection signal, and is
                                   different from the character 0377 */

        if (!local) {
            printf("Sorry, you must 'set line' first\n");
            return(-2);
        }
        if (speed < 0) {
            printf("Sorry, you must 'set speed' first\n");
            return(-2);
        }
        if ((escape < 0) || (escape > 0177)) {
            printf2("Your escape character is not ASCII - %d\n",escape);
            return(-2);
        }
        if (ttopen(ttname,&local,mdmtyp) < 0) {
            printf2("Sorry, can't open %s",ttname);
            return(-2);
        }
        printf3("Connecting thru %s, speed %d.\r\n",ttname,speed);
        printf3("The escape character is %s (%d).\r\n",chstr(escape),escape);
        printf("Type the escape character followed by C to get back,\r\n");
        printf("or followed by ? to see other options.\r\n");
        if (seslog) printf2("(Session logged to %s.)\r\n",sesfil);

/* Condition console terminal and communication line */

        if (conbin(escape) < 0) {
            printf("Sorry, can't condition console terminal\n");
            return(-2);
        }
        if (ttvt(speed,flow) < 0) {
            conres();
            printf("Sorry, Can't condition communication line\n");
            return(-2);
        }
        active = 1;
        do {
            int src;

            contti(&c, &src);
            if (src < 0) {              /* Comm line hangup or other error */
                printf("\r\nC-Kermit: Communications line failure\r\n");
                active = 0;
            } else if (src) {           /* Character from comm. line */
                c &= 0177;              /* Got a char, strip parity. */
                conoc(c);               /* Put it on the screen. */
                if (seslog) zchout(ZSFILE,c); /* If logging, log it. */
            } else {                    /* Character from console */
                c &= 0177;
                if (c == escape) {      /* Look for escape char */
                    c = coninc(0) & 0177;
                    doesc(c);
                } else {                /* Ordinary character */
                    ttoc(dopar(c));
                    if (duplex) {       /* Half duplex? */
                        conoc(c);       /* Yes, also echo it. */
                        if (seslog) zchout(ZSFILE,c);   /* And maybe log it. */
                    }
                }
            }
        } while (active);
        cancio();
        conres();
        printf("\r\nC-Kermit Disconnected\r\n");
        return(0);
}


/*  H C O N N E  --  Give help message for connect.  */

hconne() {
    int c;
    static char *hlpmsg[] = {"\
\r\nC to close the connection, or:",
"\r\n  S for status",
"\r\n  ? for help",
"\r\n  H to hang up the phone",
"\r\n  B to send a BREAK",
"\r\n  0 to send a null",
"\r\n escape character twice to send the escape character.\r\n\r\n",
"" };
    conola(hlpmsg);                     /* Print the help message. */
    conol("Command>");                  /* Prompt for command. */
    c = coninc(0);
    conoc(c);                           /* Echo it. */
    conoll("");
    doesc(c);
}


/*  C H S T R  --  Make a printable string out of a character  */

char *
chstr(c) int c; {
    static char s[8];
    char *cp = s;

    if (c < SP) {
        sprintf(cp,"CTRL-%c",ctl(c));
    } else sprintf(cp,"'%c'\n",c);
    cp = s;
    return(cp);
}


/*  D O E S C  --  Process an escape character argument  */

doesc(c) char c; {
    int d;

    c &= 0177;

    if (c == escape) {              /* Send escape character */
        d = dopar(c);
        ttoc(d);
    } else {
                                    /* Or else look it up below. */
        if (isupper(c)) c = tolower(c);
        if (iscntrl(c)) c += 'a' - '\001';

        if (c == 'c') {                 /* Close connection */
            active = 0;
            conol("\r\n");
        } else if (c == 'b') {          /* Send a BREAK */
            ttsndb();
        } else if (c == 'h') {          /* Hang up the line */
            tthang();
        } else if (c == 's') {          /* Status */
            conol("\r\nConnected thru ");
            conoll(ttname);
            if (seslog) {
                conol(", logging to ");
                conol(sesfil);
            }
        } else if (c == '?') {          /* Help */
            hconne();
        } else if (c == '0') {          /* Send a null */
            c = '\0';
            d = dopar(c);
            ttoc(d);
        } else if (c != SP) {           /* Space, ignore */
            conoc(BEL);                 /* Invalid esc arg, beep */
        }
    }
}