95 lines
1.7 KiB
C
95 lines
1.7 KiB
C
/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)in.fingerd.c 1.1 87/12/21 SMI"; /* from UCB 5.1 6/6/85 */
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#endif /* not lint */
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/*
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* Finger server.
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*/
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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int main( int argc, char *argv[] );
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void fatal( char *prog, char *s );
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int main(argc, argv)
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char *argv[];
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{
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register char *sp;
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char line[512];
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int i, p[2], pid, status;
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FILE *fp;
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char *av[4];
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line[0] = '\0';
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fgets(line, sizeof(line), stdin);
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sp = line + strlen(line);
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if (sp > line && *--sp == '\n') *sp = '\0';
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sp = line;
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av[0] = "finger";
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i = 1;
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while (1) {
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while (isspace(*sp))
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sp++;
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if (!*sp)
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break;
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if (*sp == '/' && (sp[1] == 'W' || sp[1] == 'w')) {
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sp += 2;
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av[i++] = "-l";
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}
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if (*sp && !isspace(*sp)) {
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av[i++] = sp;
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while (*sp && !isspace(*sp))
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sp++;
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*sp = '\0';
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}
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}
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av[i] = 0;
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if (pipe(p) < 0)
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fatal(argv[0], "pipe");
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if ((pid = fork()) == 0) {
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close(p[0]);
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if (p[1] != 1) {
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dup2(p[1], 1);
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close(p[1]);
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}
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execv("/usr/bin/finger", av);
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printf("No finger program found\n");
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fflush(stdout);
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_exit(1);
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}
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if (pid == -1)
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fatal(argv[0], "fork");
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close(p[1]);
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if ((fp = fdopen(p[0], "r")) == NULL)
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fatal(argv[0], "fdopen");
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while ((i = getc(fp)) != EOF) {
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if (i == '\n')
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putchar('\r');
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putchar(i);
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}
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fclose(fp);
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while ((i = wait(&status)) != pid && i != -1)
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;
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return(0);
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}
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void fatal(prog, s)
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char *prog, *s;
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{
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fprintf(stderr, "%s: ", prog);
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perror(s);
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exit(1);
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}
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