1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate *
4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate * with the License.
8*7c478bd9Sstevel@tonic-gate *
9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate *
14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate *
20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate */
26*7c478bd9Sstevel@tonic-gate
27*7c478bd9Sstevel@tonic-gate /*
28*7c478bd9Sstevel@tonic-gate * chargen inetd service - both stream and dgram based.
29*7c478bd9Sstevel@tonic-gate */
30*7c478bd9Sstevel@tonic-gate
31*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
32*7c478bd9Sstevel@tonic-gate #include <sys/socket.h>
33*7c478bd9Sstevel@tonic-gate #include <unistd.h>
34*7c478bd9Sstevel@tonic-gate #include <stdio.h>
35*7c478bd9Sstevel@tonic-gate #include <strings.h>
36*7c478bd9Sstevel@tonic-gate #include <netinet/in.h>
37*7c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h>
38*7c478bd9Sstevel@tonic-gate #include <ctype.h>
39*7c478bd9Sstevel@tonic-gate #include <inetsvc.h>
40*7c478bd9Sstevel@tonic-gate
41*7c478bd9Sstevel@tonic-gate
42*7c478bd9Sstevel@tonic-gate #define LINESIZE 72
43*7c478bd9Sstevel@tonic-gate #define RINGSIZE 128
44*7c478bd9Sstevel@tonic-gate
45*7c478bd9Sstevel@tonic-gate
46*7c478bd9Sstevel@tonic-gate static char ring[RINGSIZE];
47*7c478bd9Sstevel@tonic-gate static char *endring;
48*7c478bd9Sstevel@tonic-gate
49*7c478bd9Sstevel@tonic-gate
50*7c478bd9Sstevel@tonic-gate static void
initring(void)51*7c478bd9Sstevel@tonic-gate initring(void)
52*7c478bd9Sstevel@tonic-gate {
53*7c478bd9Sstevel@tonic-gate unsigned char ch;
54*7c478bd9Sstevel@tonic-gate
55*7c478bd9Sstevel@tonic-gate endring = ring;
56*7c478bd9Sstevel@tonic-gate
57*7c478bd9Sstevel@tonic-gate for (ch = 0; ch <= RINGSIZE; ++ch) {
58*7c478bd9Sstevel@tonic-gate if (isprint(ch))
59*7c478bd9Sstevel@tonic-gate *endring++ = ch;
60*7c478bd9Sstevel@tonic-gate }
61*7c478bd9Sstevel@tonic-gate }
62*7c478bd9Sstevel@tonic-gate
63*7c478bd9Sstevel@tonic-gate static void
chargen_stream(int s,char * argv[])64*7c478bd9Sstevel@tonic-gate chargen_stream(int s, char *argv[])
65*7c478bd9Sstevel@tonic-gate {
66*7c478bd9Sstevel@tonic-gate char text[LINESIZE+2];
67*7c478bd9Sstevel@tonic-gate int i;
68*7c478bd9Sstevel@tonic-gate char *rp;
69*7c478bd9Sstevel@tonic-gate char *dp;
70*7c478bd9Sstevel@tonic-gate char *rs = ring;
71*7c478bd9Sstevel@tonic-gate
72*7c478bd9Sstevel@tonic-gate setproctitle("chargen", s, argv);
73*7c478bd9Sstevel@tonic-gate
74*7c478bd9Sstevel@tonic-gate for (;;) {
75*7c478bd9Sstevel@tonic-gate if (rs >= endring)
76*7c478bd9Sstevel@tonic-gate rs = ring;
77*7c478bd9Sstevel@tonic-gate rp = rs++;
78*7c478bd9Sstevel@tonic-gate dp = text;
79*7c478bd9Sstevel@tonic-gate i = MIN(LINESIZE, endring - rp);
80*7c478bd9Sstevel@tonic-gate (void) memmove(dp, rp, i);
81*7c478bd9Sstevel@tonic-gate dp += i;
82*7c478bd9Sstevel@tonic-gate if ((rp += i) >= endring)
83*7c478bd9Sstevel@tonic-gate rp = ring;
84*7c478bd9Sstevel@tonic-gate if (i < LINESIZE) {
85*7c478bd9Sstevel@tonic-gate i = LINESIZE - i;
86*7c478bd9Sstevel@tonic-gate (void) memmove(dp, rp, i);
87*7c478bd9Sstevel@tonic-gate dp += i;
88*7c478bd9Sstevel@tonic-gate if ((rp += i) >= endring)
89*7c478bd9Sstevel@tonic-gate rp = ring;
90*7c478bd9Sstevel@tonic-gate }
91*7c478bd9Sstevel@tonic-gate
92*7c478bd9Sstevel@tonic-gate *dp++ = '\r';
93*7c478bd9Sstevel@tonic-gate *dp++ = '\n';
94*7c478bd9Sstevel@tonic-gate
95*7c478bd9Sstevel@tonic-gate if (safe_write(s, text, dp - text) != 0)
96*7c478bd9Sstevel@tonic-gate break;
97*7c478bd9Sstevel@tonic-gate }
98*7c478bd9Sstevel@tonic-gate }
99*7c478bd9Sstevel@tonic-gate
100*7c478bd9Sstevel@tonic-gate /* ARGSUSED3 */
101*7c478bd9Sstevel@tonic-gate static void
chargen_dg(int s,const struct sockaddr * sap,int sa_size,const void * buf,size_t sz)102*7c478bd9Sstevel@tonic-gate chargen_dg(int s, const struct sockaddr *sap, int sa_size, const void *buf,
103*7c478bd9Sstevel@tonic-gate size_t sz)
104*7c478bd9Sstevel@tonic-gate {
105*7c478bd9Sstevel@tonic-gate char text[LINESIZE+2];
106*7c478bd9Sstevel@tonic-gate int i;
107*7c478bd9Sstevel@tonic-gate char *rp;
108*7c478bd9Sstevel@tonic-gate static char *rs = ring;
109*7c478bd9Sstevel@tonic-gate
110*7c478bd9Sstevel@tonic-gate rp = rs;
111*7c478bd9Sstevel@tonic-gate if (rs++ >= endring)
112*7c478bd9Sstevel@tonic-gate rs = ring;
113*7c478bd9Sstevel@tonic-gate i = MIN(LINESIZE, endring - rp);
114*7c478bd9Sstevel@tonic-gate (void) memmove(text, rp, i);
115*7c478bd9Sstevel@tonic-gate if ((rp += i) >= endring)
116*7c478bd9Sstevel@tonic-gate rp = ring;
117*7c478bd9Sstevel@tonic-gate if (i < LINESIZE) {
118*7c478bd9Sstevel@tonic-gate (void) memmove(text, rp, i);
119*7c478bd9Sstevel@tonic-gate if ((rp += i) >= endring)
120*7c478bd9Sstevel@tonic-gate rp = ring;
121*7c478bd9Sstevel@tonic-gate }
122*7c478bd9Sstevel@tonic-gate
123*7c478bd9Sstevel@tonic-gate text[LINESIZE - 2] = '\r';
124*7c478bd9Sstevel@tonic-gate text[LINESIZE - 1] = '\n';
125*7c478bd9Sstevel@tonic-gate
126*7c478bd9Sstevel@tonic-gate (void) safe_sendto(s, text, sizeof (text), 0, sap, sa_size);
127*7c478bd9Sstevel@tonic-gate }
128*7c478bd9Sstevel@tonic-gate
129*7c478bd9Sstevel@tonic-gate int
main(int argc,char * argv[])130*7c478bd9Sstevel@tonic-gate main(int argc, char *argv[])
131*7c478bd9Sstevel@tonic-gate {
132*7c478bd9Sstevel@tonic-gate opterr = 0; /* disable getopt error msgs */
133*7c478bd9Sstevel@tonic-gate
134*7c478bd9Sstevel@tonic-gate initring();
135*7c478bd9Sstevel@tonic-gate
136*7c478bd9Sstevel@tonic-gate switch (getopt(argc, argv, "ds")) {
137*7c478bd9Sstevel@tonic-gate case 'd':
138*7c478bd9Sstevel@tonic-gate dg_template(chargen_dg, STDIN_FILENO, NULL, 0);
139*7c478bd9Sstevel@tonic-gate break;
140*7c478bd9Sstevel@tonic-gate case 's':
141*7c478bd9Sstevel@tonic-gate chargen_stream(STDIN_FILENO, argv);
142*7c478bd9Sstevel@tonic-gate break;
143*7c478bd9Sstevel@tonic-gate default:
144*7c478bd9Sstevel@tonic-gate return (1);
145*7c478bd9Sstevel@tonic-gate }
146*7c478bd9Sstevel@tonic-gate
147*7c478bd9Sstevel@tonic-gate return (0);
148*7c478bd9Sstevel@tonic-gate }
149