3cf4bdb31680365ef6fb61843df1964264cd76b8
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Tony Nardo of the Johns Hopkins University/Applied Physics Lab.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 static char sccsid
[] = "@(#)net.c 8.4 (Berkeley) 4/28/95";
41 #include <sys/types.h>
55 struct in_addr defaddr
;
56 struct hostent
*hp
, def
;
58 struct sockaddr_in sin
;
60 char *alist
[1], *host
;
62 /* If this is a local request */
63 if (!(host
= rindex(name
, '@')))
67 if (isdigit(*host
) && (defaddr
.s_addr
= inet_addr(host
)) != -1) {
69 def
.h_addr_list
= alist
;
70 def
.h_addr
= (char *)&defaddr
;
71 def
.h_length
= sizeof(struct in_addr
);
72 def
.h_addrtype
= AF_INET
;
75 } else if (!(hp
= gethostbyname(host
))) {
77 "finger: unknown host: %s\n", host
);
80 if (!(sp
= getservbyname("finger", "tcp"))) {
81 (void)fprintf(stderr
, "finger: tcp/finger: unknown service\n");
84 sin
.sin_family
= hp
->h_addrtype
;
85 bcopy(hp
->h_addr
, (char *)&sin
.sin_addr
, hp
->h_length
);
86 sin
.sin_port
= sp
->s_port
;
87 if ((s
= socket(hp
->h_addrtype
, SOCK_STREAM
, 0)) < 0) {
88 perror("finger: socket");
92 /* have network connection; identify the host connected with */
93 (void)printf("[%s]\n", hp
->h_name
);
94 if (connect(s
, (struct sockaddr
*)&sin
, sizeof(sin
)) < 0) {
95 fprintf(stderr
, "finger: connect rc = %d", WSAGetLastError());
100 /* -l flag for remote fingerd */
102 send(s
, "/W ", 3, 0);
103 /* send the name followed by <CR><LF> */
104 send(s
, name
, strlen(name
), 0);
105 send(s
, "\r\n", 2, 0);
108 * Read from the remote system; once we're connected, we assume some
109 * data. If none arrives, we hang until the user interrupts.
111 * If we see a <CR> or a <CR> with the high bit set, treat it as
112 * a newline; if followed by a newline character, only output one
115 * Otherwise, all high bits are stripped; if it isn't printable and
116 * it isn't a space, we can simply set the 7th bit. Every ASCII
117 * character with bit 7 set is printable.
120 while (recv(s
, &c
, 1, 0) == 1) {
123 if (lastc
== '\r') /* ^M^M - skip dupes */
128 if (!isprint(c
) && !isspace(c
))
130 if (lastc
!= '\r' || c
!= '\n')