Rev Author Line No. Line
3328 povik 1 /**
2 * \addtogroup telnetd
3 * @{
4 */
5  
6 /**
7 * \file
8 * An example telnet server shell
9 * \author Adam Dunkels <adam@dunkels.com>
10 */
11  
12 /*
13 * Copyright (c) 2003, Adam Dunkels.
14 * All rights reserved.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 * 1. Redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
24 * 3. The name of the author may not be used to endorse or promote
25 * products derived from this software without specific prior
26 * written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
29 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
30 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
32 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
34 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
36 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
37 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
38 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * This file is part of the Contiki desktop OS.
41 *
42 * $Id: telnetd-shell.c,v 1.1.2.1 2003/10/06 22:56:22 adam Exp $
43 *
44 */
45  
46 #include "uip.h"
47 #include "telnetd.h"
48 #include <string.h>
49  
50 struct ptentry {
51 char c;
52 void (* pfunc)(struct telnetd_state *s, char *str);
53 };
54  
55 /*-----------------------------------------------------------------------------------*/
56 static void
57 parse(struct telnetd_state *s, register char *str, struct ptentry *t)
58 {
59 register struct ptentry *p;
60 char *sstr;
61  
62 sstr = str;
63  
64 /* Loop over the parse table entries in t in order to find one that
65 matches the first character in str. */
66 for(p = t; p->c != 0; ++p) {
67 if(*str == p->c) {
68 /* Skip rest of the characters up to the first space. */
69 while(*str != ' ') {
70 ++str;
71 }
72  
73 /* Skip all spaces.*/
74 while(*str == ' ') {
75 ++str;
76 }
77  
78 /* Call parse table entry function and return. */
79 p->pfunc(s, str);
80 return;
81 }
82 }
83  
84 /* Did not find matching entry in parse table. We just call the
85 default handler supplied by the caller and return. */
86 p->pfunc(s, str);
87 }
88 /*-----------------------------------------------------------------------------------*/
89 static void
90 exitt(struct telnetd_state *s, char *str)
91 {
92 telnetd_close(s);
93 }
94 /*-----------------------------------------------------------------------------------*/
95 static void
96 inttostr(register char *str, unsigned int i)
97 {
98 str[0] = '0' + i / 100;
99 if(str[0] == '0') {
100 str[0] = ' ';
101 }
102 str[1] = '0' + (i / 10) % 10;
103 if(str[1] == '0') {
104 str[1] = ' ';
105 }
106 str[2] = '0' + i % 10;
107 str[3] = ' ';
108 str[4] = 0;
109 }
110 /*-----------------------------------------------------------------------------------*/
111 static void
112 stats(struct telnetd_state *s, char *strr)
113 {
114 char str[10];
115  
116 inttostr(str, uip_stat.ip.recv);
117 telnetd_output(s, "IP packets received ", str);
118 inttostr(str, uip_stat.ip.sent);
119 telnetd_output(s, "IP packets sent ", str);
120 inttostr(str, uip_stat.ip.drop);
121 telnetd_output(s, "IP packets dropped ", str);
122  
123 inttostr(str, uip_stat.icmp.recv);
124 telnetd_output(s, "ICMP packets received ", str);
125 inttostr(str, uip_stat.icmp.sent);
126 telnetd_output(s, "ICMP packets sent ", str);
127 inttostr(str, uip_stat.icmp.drop);
128 telnetd_output(s, "ICMP packets dropped ", str);
129  
130 inttostr(str, uip_stat.tcp.recv);
131 telnetd_output(s, "TCP packets received ", str);
132 inttostr(str, uip_stat.tcp.sent);
133 telnetd_output(s, "TCP packets sent ", str);
134 inttostr(str, uip_stat.tcp.drop);
135 telnetd_output(s, "TCP packets dropped ", str);
136 inttostr(str, uip_stat.tcp.rexmit);
137 telnetd_output(s, "TCP packets retransmitted ", str);
138 inttostr(str, uip_stat.tcp.synrst);
139 telnetd_output(s, "TCP connection attempts ", str);
140 }
141 /*-----------------------------------------------------------------------------------*/
142 static void
143 help(struct telnetd_state *s, char *str)
144 {
145 telnetd_output(s, "Available commands:", "");
146 telnetd_output(s, "stats - show uIP statistics", "");
147 telnetd_output(s, "exit - exit shell", "");
148 telnetd_output(s, "? - show this help", "");
149 }
150 /*-----------------------------------------------------------------------------------*/
151 static void
152 none(struct telnetd_state *s, char *str)
153 {
154 if(strlen(str) > 0) {
155 telnetd_output(s, "Unknown command", "");
156 }
157 }
158 /*-----------------------------------------------------------------------------------*/
159 static struct ptentry configparsetab[] =
160 {{'s', stats},
161 {'e', exitt},
162 {'?', help},
163  
164 /* Default action */
165 {0, none}};
166 /*-----------------------------------------------------------------------------------*/
167 void
168 telnetd_connected(struct telnetd_state *s)
169 {
170 telnetd_output(s, "uIP command shell", "");
171 telnetd_output(s, "Type '?' for help", "");
172 telnetd_prompt(s, "uIP-0.9> ");
173 }
174 /*-----------------------------------------------------------------------------------*/
175 void
176 telnetd_input(struct telnetd_state *s, char *cmd)
177 {
178 parse(s, cmd, configparsetab);
179 telnetd_prompt(s, "uIP-0.9> ");
180 }
181 /*-----------------------------------------------------------------------------------*/