1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/*
* Copyright (c) 1983 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
/*static char sccsid[] = "from: @(#)fingerd.c 5.6 (Berkeley) 6/1/90";*/
static char rcsid[] = "$Id: fingerd.c,v 1.2 1996/05/30 08:44:11 deraadt Exp $";
#endif /* not lint */
#include <stdio.h>
#include "pathnames.h"
main()
{
register FILE *fp;
register int ch;
register char *lp;
int p[2];
#define ENTRIES 50
char **ap, *av[ENTRIES + 1], line[1024], *strtok();
int i;
#ifdef LOGGING /* unused for now */
#include <netinet/in.h>
struct sockaddr_in sin;
int sval;
sval = sizeof(sin);
if (getpeername(0, &sin, &sval) < 0)
fatal("getpeername");
#endif
if (!fgets(line, sizeof(line), stdin))
exit(1);
av[0] = "finger";
for (lp = line, ap = &av[1];;) {
*ap = strtok(lp, " \t\r\n");
if (!*ap)
break;
/* RFC742: "/[Ww]" == "-l" */
if ((*ap)[0] == '/' && ((*ap)[1] == 'W' || (*ap)[1] == 'w'))
*ap = "-l";
if (++ap == av + ENTRIES)
break;
lp = NULL;
}
for (i = 1; av[i]; i++) {
int l = strlen(av[i]);
while (av[i][l-1] == '@')
av[i][--l] = '\0';
if (av[i][0] == '\0')
av[i] = NULL;
}
if (pipe(p) < 0)
fatal("pipe");
switch(fork()) {
case 0:
(void)close(p[0]);
if (p[1] != 1) {
(void)dup2(p[1], 1);
(void)close(p[1]);
}
execv(_PATH_FINGER, av);
_exit(1);
case -1:
fatal("fork");
}
(void)close(p[1]);
if (!(fp = fdopen(p[0], "r")))
fatal("fdopen");
while ((ch = getc(fp)) != EOF) {
if (ch == '\n')
putchar('\r');
putchar(ch);
}
exit(0);
}
fatal(msg)
char *msg;
{
extern int errno;
char *strerror();
fprintf(stderr, "fingerd: %s: %s\r\n", msg, strerror(errno));
exit(1);
}
|
