source: trunk/minix/commands/simple/in.fingerd.c@ 15

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

#ifndef lint
static char sccsid[] = "@(#)in.fingerd.c 1.1 87/12/21 SMI"; /* from UCB 5.1 6/6/85 */
#endif /* not lint */

/*
 * Finger server.
 */
#include <sys/types.h>
#include <sys/wait.h>
#include <stdio.h>
#include <ctype.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>

int main _ARGS(( int argc, char *argv[] ));
void fatal _ARGS(( char *prog, char *s ));

int main(argc, argv)
        char *argv[];
{
        register char *sp;
        char line[512];
        int i, p[2], pid, status;
        FILE *fp;
        char *av[4];

        line[0] = '\0';
        fgets(line, sizeof(line), stdin);
        sp = line + strlen(line);
        if (sp > line && *--sp == '\n') *sp = '\0';
        sp = line;
        av[0] = "finger";
        i = 1;
        while (1) {
                while (isspace(*sp))
                        sp++;
                if (!*sp)
                        break;
                if (*sp == '/' && (sp[1] == 'W' || sp[1] == 'w')) {
                        sp += 2;
                        av[i++] = "-l";
                }
                if (*sp && !isspace(*sp)) {
                        av[i++] = sp;
                        while (*sp && !isspace(*sp))
                                sp++;
                        *sp = '\0';
                }
        }
        av[i] = 0;
        if (pipe(p) < 0)
                fatal(argv[0], "pipe");
        if ((pid = fork()) == 0) {
                close(p[0]);
                if (p[1] != 1) {
                        dup2(p[1], 1);
                        close(p[1]);
                }
                execv("/usr/bin/finger", av);
                printf("No finger program found\n");
                fflush(stdout);
                _exit(1);
        }
        if (pid == -1)
                fatal(argv[0], "fork");
        close(p[1]);
        if ((fp = fdopen(p[0], "r")) == NULL)
                fatal(argv[0], "fdopen");
        while ((i = getc(fp)) != EOF) {
                if (i == '\n')
                        putchar('\r');
                putchar(i);
        }
        fclose(fp);
        while ((i = wait(&status)) != pid && i != -1)
                ;
        return(0);
}

void fatal(prog, s)
        char *prog, *s;
{

        fprintf(stderr, "%s: ", prog);
        perror(s);
        exit(1);
}