/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#include "tip.h"
#include <limits.h>
#ifdef USG
#include <unistd.h>
#else
#include <vfork.h>
#endif

/*
 * tip
 *
 * miscellaneous commands
 */

struct termios arg;
struct termios defarg;
int     FD;
int     fildes[2];
int     repdes[2];
int     pid;
int     sfd;
int     stoprompt;
int     timedout;
int     quant[] = { 60, 60, 24 };

char    copyname[80];
char    fname[80];
char    ccc;
char    null = '\0';
char    *sep[] = { "second", "minute", "hour" };
static  char *argv[10];         /* argument vector for take and put */

sigjmp_buf intbuf;              /* for interrupts and timeouts */

void    timeout(void);          /* timeout function called on alarm */
void    intcopy(void);          /* interrupt routine for file transfers */
void    transfer(char *, int, char *);
void    transmit(FILE *, char *, char *);
void    send(char);
void    execute(char *);
void    prtime(char *, time_t);
void    hardwareflow(char *);
void    intr(char *);
int     args(char *, char *[], size_t);
int     anyof(char *, char *);

/*
 * FTP - remote ==> local
 *  get a file from the remote host
 */
void
getfl(int c)
{
        char buf[256], *cp;

        (void) putchar(c);
        /*
         * get the UNIX receiving file's name
         */
        if (prompt("Local file name? ", copyname, sizeof (copyname)))
                return;
        cp = expand(copyname);
        if (cp == NOSTR)
                return;
        if ((sfd = creat(cp, 0666)) < 0) {
                (void) printf("\r\n%s: cannot creat\r\n", copyname);
                return;
        }

        /*
         * collect parameters
         */
        if (prompt("List command for remote system? ", buf, sizeof (buf))) {
                (void) unlink(copyname);
                return;
        }
        transfer(buf, sfd, value(EOFREAD));
}

/*
 * Cu-like take command
 */
/* ARGSUSED */
void
cu_take(int cc)
{
        int fd, argc;
        char line[BUFSIZ], *cp;

        if (prompt("[take] ", copyname, sizeof (copyname)))
                return;
        argc = args(copyname, argv, sizeof (argv)/sizeof (char *));
        if (argc < 1 || argc > 2) {
                (void) printf("usage: <take> from [to]\r\n");
                return;
        }
        if (argc == 1)
                argv[1] = argv[0];
        cp = expand(argv[1]);
        if (cp == NOSTR)
                return;
        if ((fd = creat(cp, 0666)) < 0) {
                (void) printf("\r\n%s: cannot create\r\n", argv[1]);
                return;
        }
        (void) snprintf(line, sizeof (line), "cat %s; echo \01", argv[0]);
        transfer(line, fd, "\01");
}

/*
 * Bulk transfer routine --
 *  used by getfl(), cu_take(), and pipefile()
 */
void
transfer(char *buf, int fd, char *eofchars)
{
        int ct;
        char c, buffer[BUFSIZ];
        char *p = buffer;       /* can't be register because of longjmp */
        int cnt, eof, bol;
        time_t start;
        sig_handler_t   f;

        parwrite(FD, (unsigned char *)buf, strlen(buf));
        (void) kill(pid, SIGIOT);
        /* Wait until read process stops */
        (void) read(repdes[0], (char *)&ccc, 1);

        /*
         * finish command
         */
        parwrite(FD, (unsigned char *)"\r", 1);
        do
                (void) read(FD, &c, 1);
        while ((c&0177) != '\n')
                ;

        if (sigsetjmp(intbuf, 1))
                goto out;
        f = signal(SIGINT, (sig_handler_t)intcopy);
        intr("on");

        start = time(0);
        bol = 1;
        ct = 0;
        for (;;) {
                eof = read(FD, &c, 1) <= 0;
                if (noparity)
                        c &= 0377;
                else
                        c &= 0177;
                if (eof || (bol && any(c, eofchars)))
                        break;
                if (c == 0)
                        continue;       /* ignore nulls */
                if (c == '\r')
                        continue;
                *p++ = c;

                if (c == '\n') {
                        bol = 1;
                        if (boolean(value(VERBOSE)))
                                (void) printf("\r%d", ++ct);
                } else
                        bol = 0;
                if ((cnt = (p-buffer)) == number(value(FRAMESIZE))) {
                        if (write(fd, buffer, cnt) != cnt) {
                                (void) printf("\r\nwrite error\r\n");
                                goto out;
                        }
                        p = buffer;
                }
        }
out:
        if ((cnt = (p-buffer)) != 0)
                if (write(fd, buffer, cnt) != cnt)
                        (void) printf("\r\nwrite error\r\n");

        if (boolean(value(VERBOSE)))
                prtime(" lines transferred in ", time(0)-start);
        intr("off");
        (void) write(fildes[1], (char *)&ccc, 1);
        (void) signal(SIGINT, f);
        (void) close(fd);
}

/*
 * FTP - remote ==> local process
 *   send remote input to local process via pipe
 */
/* ARGSUSED */
void
pipefile(int cc)
{
        int cpid, pdes[2];
        char buf[256];
        int status, p;

        if (prompt("Local command? ", buf, sizeof (buf)))
                return;

        if (pipe(pdes)) {
                (void) printf("can't establish pipe\r\n");
                return;
        }

        if ((cpid = fork()) < 0) {
                (void) printf("can't fork!\r\n");
                return;
        } else if (cpid) {
                if (prompt("List command for remote system? ", buf,
                    sizeof (buf))) {
                        (void) close(pdes[0]), (void) close(pdes[1]);
                        (void) kill(cpid, SIGKILL);
                } else {
                        (void) close(pdes[0]);
                        (void) signal(SIGPIPE, (sig_handler_t)intcopy);
                        transfer(buf, pdes[1], value(EOFREAD));
                        (void) signal(SIGPIPE, SIG_DFL);
                        while ((p = wait(&status)) > 0 && p != cpid)
                                ;
                }
        } else {
                int f;

                userperm();
                (void) dup2(pdes[0], 0);
                (void) close(pdes[0]);
                for (f = 3; f < 20; f++)
                        (void) close(f);
                execute(buf);
                (void) printf("can't execl!\r\n");
                exit(0);
        }
}

/*
 * FTP - local ==> remote
 *  send local file to remote host
 *  terminate transmission with pseudo EOF sequence
 */
void
tip_sendfile(int cc)
{
        FILE *fd;
        char *fnamex;

        (void) putchar(cc);
        /*
         * get file name
         */
        if (prompt("Local file name? ", fname, sizeof (fname)))
                return;

        /*
         * look up file
         */
        fnamex = expand(fname);
        if (fnamex == NOSTR)
                return;
        if ((fd = fopen(fnamex, "r")) == NULL) {
                (void) printf("%s: cannot open\r\n", fname);
                return;
        }
        transmit(fd, value(EOFWRITE), NULL);
        if (!boolean(value(ECHOCHECK))) {
                struct termios buf;

                (void) ioctl(FD, TCGETS, (char *)&buf); /* this does a */
                (void) ioctl(FD, TCSETSF, (char *)&buf);        /* wflushtty */
        }
}

/*
 * Bulk transfer routine to remote host --
 *   used by tip_sendfile() and cu_put()
 */
void
transmit(FILE *fd, char *eofchars, char *command)
{
        sig_handler_t   ointr;
        char *pc, lastc, rc;
        int c, ccount, lcount;
        time_t start_t, stop_t;

        (void) kill(pid, SIGIOT);       /* put TIPOUT into a wait state */
        timedout = 0;
        if (sigsetjmp(intbuf, 1)) {
                if (timedout)
                        (void) printf("\r\ntimed out at eol\r\n");
                (void) alarm(0);
                goto out;
        }
        ointr = signal(SIGINT, (sig_handler_t)intcopy);
        intr("on");
        (void) read(repdes[0], (char *)&ccc, 1);
        if (command != NULL) {
                for (pc = command; *pc; pc++)
                        send(*pc);
                if (boolean(value(ECHOCHECK)))
                        (void) read(FD, (char *)&c, 1); /* trailing \n */
                else {
                        struct termios buf;
                        /* wait for remote stty to take effect */
                        (void) sleep(5);
                        /* this does a */
                        (void) ioctl(FD, TCGETS, (char *)&buf);
                        /* wflushtty */
                        (void) ioctl(FD, TCSETSF, (char *)&buf);
                }
        }
        lcount = 0;
        lastc = '\0';
        start_t = time(0);
        if (boolean(value(RAWFTP))) {
                while ((c = getc(fd)) != EOF) {
                        lcount++;
                        send(c);
                        if (boolean(value(VERBOSE)) && lcount%100 == 0)
                                (void) printf("\r%d", lcount);
                }
                if (boolean(value(VERBOSE)))
                        (void) printf("\r%d", lcount);
                goto out;
        }
        for (;;) {
                ccount = 0;
                do {
                        c = getc(fd);
                        if (c == EOF)
                                goto out;
                        if (c == 0177)
                                continue;
                        lastc = c;
                        if (c < 040) {
                                if (c == '\n') {
                                        c = '\r';
                                } else if (c == '\t') {
                                        if (boolean(value(TABEXPAND))) {
                                                send(' ');
                                                while ((++ccount % 8) != 0)
                                                        send(' ');
                                                continue;
                                        }
                                } else
                                        continue;
                        }
                        send(c);
                } while (c != '\r');
                if (boolean(value(VERBOSE)))
                        (void) printf("\r%d", ++lcount);
                if (boolean(value(ECHOCHECK))) {
                        (void) alarm(number(value(ETIMEOUT)));
                        do {    /* wait for prompt */
                                (void) read(FD, &rc, 1);
                        } while ((rc&0177) != character(value(PROMPT)));
                        (void) alarm(0);
                }
        }
out:
        if (lastc != '\n' && !boolean(value(RAWFTP)))
                send('\r');
        if (eofchars)
                for (pc = eofchars; *pc; pc++)
                        send(*pc);
        stop_t = time(0);
        (void) fclose(fd);
        if (boolean(value(VERBOSE)))
                if (boolean(value(RAWFTP)))
                        prtime(" chars transferred in ", stop_t-start_t);
                else
                        prtime(" lines transferred in ", stop_t-start_t);
        (void) write(fildes[1], (char *)&ccc, 1);
        intr("off");
        (void) signal(SIGINT, ointr);
}

/*
 * Cu-like put command
 */
/* ARGSUSED */
void
cu_put(int cc)
{
        FILE *fd;
        char line[BUFSIZ];
        int argc;
        char *copynamex;

        if (prompt("[put] ", copyname, sizeof (copyname)))
                return;
        argc = args(copyname, argv, sizeof (argv)/sizeof (char *));
        if (argc < 1 || argc > 2) {
                (void) printf("usage: <put> from [to]\r\n");
                return;
        }
        if (argc == 1)
                argv[1] = argv[0];
        copynamex = expand(argv[0]);
        if (copynamex == NOSTR)
                return;
        if ((fd = fopen(copynamex, "r")) == NULL) {
                (void) printf("%s: cannot open\r\n", copynamex);
                return;
        }
        if (boolean(value(ECHOCHECK)))
                (void) snprintf(line, sizeof (line), "cat>%s\r", argv[1]);
        else
                (void) snprintf(line, sizeof (line),
                    "stty -echo; cat>%s; stty echo\r", argv[1]);
        transmit(fd, "\04", line);
}

/*
 * FTP - send single character
 *  wait for echo & handle timeout
 */
void
send(char c)
{
        char cc;
        int retry = 0;

        cc = c;
        parwrite(FD, (unsigned char *)&cc, 1);
#ifdef notdef
        if (number(value(CDELAY)) > 0 && c != '\r')
                nap(number(value(CDELAY)));
#endif
        if (!boolean(value(ECHOCHECK))) {
#ifdef notdef
                if (number(value(LDELAY)) > 0 && c == '\r')
                        nap(number(value(LDELAY)));
#endif
                return;
        }
tryagain:
        timedout = 0;
        if (sigsetjmp(intbuf, 1) && timedout) {
                (void) printf("\r\ntimeout error (%s)\r\n", ctrl(c));
                if (retry++ > 3)
                        return;
                parwrite(FD, (unsigned char *)&null, 1); /* poke it */
                goto tryagain;
        }
        (void) alarm(number(value(ETIMEOUT)));
        (void) read(FD, &cc, 1);
        (void) alarm(0);
}

void
timeout(void)
{
        (void) signal(SIGALRM, (sig_handler_t)timeout);
        timedout = 1;
        siglongjmp(intbuf, 1);
}

/*
 * Stolen from consh() -- puts a remote file on the output of a local command.
 *      Identical to consh() except for where stdout goes.
 */
void
pipeout(int c)
{
        char buf[256];
        int cpid, status, p;
        time_t start;

        (void) putchar(c);
        if (prompt("Local command? ", buf, sizeof (buf)))
                return;
        (void) kill(pid, SIGIOT);       /* put TIPOUT into a wait state */
        (void) signal(SIGINT, SIG_IGN);
        (void) signal(SIGQUIT, SIG_IGN);
        intr("on");
        (void) read(repdes[0], (char *)&ccc, 1);
        /*
         * Set up file descriptors in the child and
         *  let it go...
         */
        if ((cpid = fork()) < 0)
                (void) printf("can't fork!\r\n");
        else if (cpid) {
                start = time(0);
                while ((p = wait(&status)) > 0 && p != cpid)
                        ;
        } else {
                int i;

                userperm();
                (void) dup2(FD, 1);
                for (i = 3; i < 20; i++)
                        (void) close(i);
                (void) signal(SIGINT, SIG_DFL);
                (void) signal(SIGQUIT, SIG_DFL);
                execute(buf);
                (void) printf("can't find `%s'\r\n", buf);
                exit(0);
        }
        if (boolean(value(VERBOSE)))
                prtime("away for ", time(0)-start);
        (void) write(fildes[1], (char *)&ccc, 1);
        intr("off");
        (void) signal(SIGINT, SIG_DFL);
        (void) signal(SIGQUIT, SIG_DFL);
}

/*
 * Fork a program with:
 *  0 <-> remote tty in
 *  1 <-> remote tty out
 *  2 <-> local tty stderr out
 */
void
consh(int c)
{
        char buf[256];
        int cpid, status, p;
        sig_handler_t   ointr, oquit;
        time_t start;

        (void) putchar(c);
        if (prompt("Local command? ", buf, sizeof (buf)))
                return;
        (void) kill(pid, SIGIOT);       /* put TIPOUT into a wait state */
        (void) read(repdes[0], (char *)&ccc, 1);
        ointr = signal(SIGINT, SIG_IGN);
        oquit = signal(SIGQUIT, SIG_IGN);
        unraw();
        /*
         * Set up file descriptors in the child and
         *  let it go...
         */
        if ((cpid = fork()) < 0)
                (void) printf("can't fork!\r\n");
        else if (cpid) {
                start = time(0);
                while ((p = wait(&status)) > 0 && p != cpid)
                        ;
                raw();
                (void) signal(SIGINT, ointr);
                (void) signal(SIGQUIT, oquit);
        } else {
                int i;

                userperm();
                (void) dup2(FD, 0);
                (void) dup2(0, 1);
                for (i = 3; i < 20; i++)
                        (void) close(i);
                (void) signal(SIGINT, SIG_DFL);
                (void) signal(SIGQUIT, SIG_DFL);
                execute(buf);
                (void) printf("can't find `%s'\r\n", buf);
                exit(0);
        }
        if (boolean(value(VERBOSE)))
                prtime("\r\naway for ", time(0)-start);
        (void) write(fildes[1], (char *)&ccc, 1);
}

/*
 * Escape to local shell
 */
/* ARGSUSED */
void
shell(int cc)
{
        int shpid, status;
        sig_handler_t   ointr, oquit;
        char *cp;

        (void) printf("[sh]\r\n");
        ointr = signal(SIGINT, SIG_IGN);
        oquit = signal(SIGQUIT, SIG_IGN);
        unraw();
        if (shpid = fork()) {
                while (shpid != wait(&status))
                        ;
                raw();
                (void) printf("\r\n!\r\n");
                (void) signal(SIGINT, ointr);
                (void) signal(SIGQUIT, oquit);
        } else {
                userperm();
                (void) signal(SIGQUIT, SIG_DFL);
                (void) signal(SIGINT, SIG_DFL);
                if ((cp = strrchr(value(SHELL), '/')) == NULL)
                        cp = value(SHELL);
                else
                        cp++;
                (void) execl(value(SHELL), cp, 0);
                (void) printf("\r\ncan't execl!\r\n");
                exit(1);
        }
}

/*
 * TIPIN portion of scripting
 *   initiate the conversation with TIPOUT
 */
void
setscript(void)
{
        char c;

        if (strlen(value(RECORD)) >= PATH_MAX-1) {
                (void) fprintf(stderr, "tip: record file name too long\r\n");
                return;
        }
        /*
         * enable TIPOUT side for dialogue
         */
        (void) kill(pid, SIGEMT);
        if (boolean(value(SCRIPT)))
                (void) write(fildes[1], value(RECORD), strlen(value(RECORD)));
        (void) write(fildes[1], "\n", 1);
        /*
         * wait for TIPOUT to finish
         */
        (void) read(repdes[0], &c, 1);
        if (c == 'n')
                (void) fprintf(stderr, "tip: can't create record file %s\r\n",
                    value(RECORD));
}

/*
 * Change current working directory of
 *   local portion of tip
 */
/* ARGSUSED */
void
chdirectory(int cc)
{
        char dirname[80];
        char *cp = dirname;

        if (prompt("[cd] ", dirname, sizeof (dirname))) {
                if (stoprompt)
                        return;
                cp = value(HOME);
        }
        if (chdir(cp) < 0)
                (void) printf("%s: bad directory\r\n", cp);
        (void) printf("!\r\n");
}

void
tip_abort(char *msg)
{
        /* don't want to hear about our child */
        (void) signal(SIGCHLD, SIG_DFL);
        (void) kill(pid, SIGTERM);
        myperm();
        disconnect(msg);
        if (msg != NOSTR)
                (void) printf("\r\n%s", msg);
        (void) printf("\r\n[EOT]\r\n");
        delock(uucplock);
        unraw();
        exit(0);
}

/* ARGSUSED */
void
finish(int cc)
{
        char *dismsg;

        if ((dismsg = value(DISCONNECT)) != NOSTR) {
                (void) write(FD, dismsg, strlen(dismsg));
                (void) sleep(5);
        }
        tip_abort(NOSTR);
}

void
intcopy(void)
{

        (void) signal(SIGINT, SIG_IGN);
        siglongjmp(intbuf, 1);
}

void
execute(char *s)
{
        char *cp;

        if ((cp = strrchr(value(SHELL), '/')) == NULL)
                cp = value(SHELL);
        else
                cp++;
        (void) execl(value(SHELL), cp, "-c", s, 0);
}

int
args(char *buf, char *a[], size_t na)
{
        char *p = buf, *start;
        char **parg = a;
        int n = 0;

        do {
                while (*p && (*p == ' ' || *p == '\t'))
                        p++;
                start = p;
                if (*p)
                        *parg = p;
                while (*p && (*p != ' ' && *p != '\t'))
                        p++;
                if (p != start)
                        parg++, n++;
                if (*p)
                        *p++ = '\0';
        } while (*p && n < na);

        return (n);
}

void
prtime(char *s, time_t a)
{
        int i;
        int nums[3];

        for (i = 0; i < 3; i++) {
                nums[i] = (int)(a % quant[i]);
                a /= quant[i];
        }
        (void) printf("%s", s);
        while (--i >= 0)
                if (nums[i] || i == 0 && nums[1] == 0 && nums[2] == 0)
                        (void) printf("%d %s%c ", nums[i], sep[i],
                            nums[i] == 1 ? '\0' : 's');
        (void) printf("\r\n!\r\n");
}

/* ARGSUSED */
void
variable(int cc)
{
        char    buf[256];

        if (prompt("[set] ", buf, sizeof (buf)))
                return;
        vlex(buf);
        if (vtable[BEAUTIFY].v_access&CHANGED) {
                vtable[BEAUTIFY].v_access &= ~CHANGED;
                (void) kill(pid, SIGSYS);
        }
        if (vtable[SCRIPT].v_access&CHANGED) {
                vtable[SCRIPT].v_access &= ~CHANGED;
                setscript();
                /*
                 * So that "set record=blah script" doesn't
                 *  cause two transactions to occur.
                 */
                if (vtable[RECORD].v_access&CHANGED)
                        vtable[RECORD].v_access &= ~CHANGED;
        }
        if (vtable[RECORD].v_access&CHANGED) {
                vtable[RECORD].v_access &= ~CHANGED;
                if (boolean(value(SCRIPT)))
                        setscript();
        }
        if (vtable[TAND].v_access&CHANGED) {
                vtable[TAND].v_access &= ~CHANGED;
                if (boolean(value(TAND)))
                        tandem("on");
                else
                        tandem("off");
        }
        if (vtable[LECHO].v_access&CHANGED) {
                vtable[LECHO].v_access &= ~CHANGED;
                boolean(value(HALFDUPLEX)) = boolean(value(LECHO));
        }
        if (vtable[PARITY].v_access&CHANGED) {
                vtable[PARITY].v_access &= ~CHANGED;
                setparity(NULL);
        }
        if (vtable[BAUDRATE].v_access&CHANGED) {
                vtable[BAUDRATE].v_access &= ~CHANGED;
                ttysetup(speed(number(value(BAUDRATE))));
        }
        if (vtable[HARDWAREFLOW].v_access & CHANGED) {
                vtable[HARDWAREFLOW].v_access &= ~CHANGED;
                if (boolean(value(HARDWAREFLOW)))
                        hardwareflow("on");
                else
                        hardwareflow("off");
        }
}

/*
 * Turn tandem mode on or off for remote tty.
 */
void
tandem(char *option)
{
        struct termios rmtty;

        (void) ioctl(FD, TCGETS, (char *)&rmtty);
        if (equal(option, "on")) {
                rmtty.c_iflag |= IXOFF|IXON;
                arg.c_iflag |= IXOFF|IXON;
                rmtty.c_cc[VSTART] = defarg.c_cc[VSTART];
                rmtty.c_cc[VSTOP] = defarg.c_cc[VSTOP];
        } else {
                rmtty.c_iflag &= ~(IXOFF|IXON);
                arg.c_iflag &= ~(IXOFF|IXON);
        }
        (void) ioctl(FD, TCSETSF, (char *)&rmtty);
        (void) ioctl(0, TCSETSF, (char *)&arg);
}

/*
 * Turn hardwareflow mode on or off for remote tty.
 */
void
hardwareflow(char *option)
{
        struct termios rmtty;

        (void) ioctl(FD, TCGETS, (char *)&rmtty);
        if (equal(option, "on")) {
                rmtty.c_cflag |= (CRTSCTS|CRTSXOFF);
        } else {
                rmtty.c_cflag &= ~(CRTSCTS|CRTSXOFF);
        }
        (void) ioctl(FD, TCSETSF, (char *)&rmtty);
}

/*
 * Turn interrupts from local tty on or off.
 */
void
intr(char *option)
{

        if (equal(option, "on"))
                arg.c_lflag |= ISIG;
        else
                arg.c_lflag &= ~ISIG;
        (void) ioctl(0, TCSETSF, (char *)&arg);
}

/*
 * Send a break.
 */
/* ARGSUSED */
void
genbrk(int cc)
{

        (void) ioctl(FD, TCSBRK, 0);
}

/*
 * Suspend tip
 */
void
suspend(int c)
{

        unraw();
        (void) kill(c == _CTRL('y') ? getpid() : 0, SIGTSTP);
        raw();
}

/*
 *      expand a file name if it includes shell meta characters
 */

char *
expand(char name[])
{
        static char xname[BUFSIZ];
        char cmdbuf[BUFSIZ];
        int pid, l;
        char *cp, *Shell;
        int s, pivec[2];

        if (!anyof(name, "~{[*?$`'\"\\"))
                return (name);
        if (pipe(pivec) < 0) {
                perror("pipe");
                return (name);
        }
        (void) snprintf(cmdbuf, sizeof (cmdbuf), "echo %s", name);
        if ((pid = vfork()) == 0) {
                userperm();
                Shell = value(SHELL);
                if (Shell == NOSTR)
                        Shell = "/bin/sh";
                (void) close(pivec[0]);
                (void) close(1);
                (void) dup(pivec[1]);
                (void) close(pivec[1]);
                (void) close(2);
                (void) execl(Shell, Shell, "-c", cmdbuf, 0);
                _exit(1);
        }
        if (pid == -1) {
                perror("fork");
                (void) close(pivec[0]);
                (void) close(pivec[1]);
                return (NOSTR);
        }
        (void) close(pivec[1]);
        l = read(pivec[0], xname, BUFSIZ);
        (void) close(pivec[0]);
        while (wait(&s) != pid)
                ;
        s &= 0377;
        if (s != 0 && s != SIGPIPE) {
                (void) fprintf(stderr, "\"Echo\" failed\n");
                return (NOSTR);
        }
        if (l < 0) {
                perror("read");
                return (NOSTR);
        }
        if (l == 0) {
                (void) fprintf(stderr, "\"%s\": No match\n", name);
                return (NOSTR);
        }
        if (l == BUFSIZ) {
                (void) fprintf(stderr, "Buffer overflow expanding \"%s\"\n",
                    name);
                return (NOSTR);
        }
        xname[l] = 0;
        for (cp = &xname[l-1]; *cp == '\n' && cp > xname; cp--)
                ;
        *++cp = '\0';
        return (xname);
}

/*
 * Are any of the characters in the two strings the same?
 */

int
anyof(char *s1, char *s2)
{
        int c;

        while ((c = *s1++) != 0)
                if (any(c, s2))
                        return (1);
        return (0);
}