| 1 | /*
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| 2 | * Copyright (c) 1983 Regents of the University of California.
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| 3 | * All rights reserved. The Berkeley software License Agreement
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| 4 | * specifies the terms and conditions for redistribution.
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| 5 | */
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| 6 |
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| 7 | #ifndef lint
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| 8 | static char sccsid[] = "@(#)in.fingerd.c 1.1 87/12/21 SMI"; /* from UCB 5.1 6/6/85 */
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| 9 | #endif /* not lint */
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| 10 |
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| 11 | /*
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| 12 | * Finger server.
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| 13 | */
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| 14 | #include <sys/types.h>
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| 15 | #include <sys/wait.h>
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| 16 | #include <stdio.h>
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| 17 | #include <ctype.h>
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| 18 | #include <unistd.h>
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| 19 | #include <stdlib.h>
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| 20 | #include <string.h>
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| 21 |
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| 22 | int main _ARGS(( int argc, char *argv[] ));
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| 23 | void fatal _ARGS(( char *prog, char *s ));
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| 24 |
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| 25 | int main(argc, argv)
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| 26 | char *argv[];
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| 27 | {
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| 28 | register char *sp;
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| 29 | char line[512];
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| 30 | int i, p[2], pid, status;
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| 31 | FILE *fp;
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| 32 | char *av[4];
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| 33 |
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| 34 | line[0] = '\0';
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| 35 | fgets(line, sizeof(line), stdin);
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| 36 | sp = line + strlen(line);
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| 37 | if (sp > line && *--sp == '\n') *sp = '\0';
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| 38 | sp = line;
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| 39 | av[0] = "finger";
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| 40 | i = 1;
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| 41 | while (1) {
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| 42 | while (isspace(*sp))
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| 43 | sp++;
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| 44 | if (!*sp)
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| 45 | break;
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| 46 | if (*sp == '/' && (sp[1] == 'W' || sp[1] == 'w')) {
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| 47 | sp += 2;
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| 48 | av[i++] = "-l";
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| 49 | }
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| 50 | if (*sp && !isspace(*sp)) {
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| 51 | av[i++] = sp;
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| 52 | while (*sp && !isspace(*sp))
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| 53 | sp++;
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| 54 | *sp = '\0';
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| 55 | }
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| 56 | }
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| 57 | av[i] = 0;
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| 58 | if (pipe(p) < 0)
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| 59 | fatal(argv[0], "pipe");
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| 60 | if ((pid = fork()) == 0) {
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| 61 | close(p[0]);
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| 62 | if (p[1] != 1) {
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| 63 | dup2(p[1], 1);
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| 64 | close(p[1]);
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| 65 | }
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| 66 | execv("/usr/bin/finger", av);
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| 67 | printf("No finger program found\n");
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| 68 | fflush(stdout);
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| 69 | _exit(1);
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| 70 | }
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| 71 | if (pid == -1)
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| 72 | fatal(argv[0], "fork");
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| 73 | close(p[1]);
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| 74 | if ((fp = fdopen(p[0], "r")) == NULL)
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| 75 | fatal(argv[0], "fdopen");
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| 76 | while ((i = getc(fp)) != EOF) {
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| 77 | if (i == '\n')
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| 78 | putchar('\r');
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| 79 | putchar(i);
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| 80 | }
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| 81 | fclose(fp);
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| 82 | while ((i = wait(&status)) != pid && i != -1)
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| 83 | ;
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| 84 | return(0);
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| 85 | }
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| 86 |
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| 87 | void fatal(prog, s)
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| 88 | char *prog, *s;
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| 89 | {
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| 90 |
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| 91 | fprintf(stderr, "%s: ", prog);
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| 92 | perror(s);
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| 93 | exit(1);
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| 94 | }
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