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
|
/*
* Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team.
* 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. Neither the name of Hyra 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
*/
#include <sys/types.h>
#include <sys/cdefs.h>
#include <fcntl.h>
#include <stddef.h>
#include <unistd.h>
#include <string.h>
#define prcons(FD, STR) write((FD), (STR), strlen((STR)))
#define is_ascii(C) ((C) >= 0 && (C) <= 128)
#define WELCOME \
":::::::::::::::::::::::::::::::::::::::\n" \
":: OSMORA GATEWAY ~ Every key echos ::\n" \
":: ..... Proceed with purpose ..... ::\n" \
":::::::::::::::::::::::::::::::::::::::\n"
#define CMD_ECHO "echo"
static char buf[64];
static uint8_t i;
static void
cmd_run(int fd)
{
int cmp;
char *p = buf;
size_t len;
int valid_cmd = 1;
switch (buf[0]) {
case 'e':
len = strlen(CMD_ECHO);
if (memcmp(buf, CMD_ECHO, len) == 0) {
p += len + 1;
prcons(fd, "\n");
prcons(fd, p);
break;
}
valid_cmd = 0;
break;
default:
valid_cmd = 0;
break;
}
if (!valid_cmd) {
prcons(fd, "\nunrecognized command\n");
}
}
int
main(int argc, char **argv)
{
int fd;
uint16_t input;
char c;
if ((fd = open("/dev/console", O_RDWR)) < 0) {
return fd;
}
i = 0;
prcons(fd, WELCOME);
prcons(fd, "[root::osmora]~ ");
for (;;) {
if (read(fd, &input, 2) <= 0) {
continue;
}
c = input & 0xFF;
if (!is_ascii(c)) {
continue;
}
if (i < sizeof(buf)) {
buf[i++] = c;
buf[i] = 0;
}
if (c == '\n') {
cmd_run(fd);
i = 0;
buf[i] = 0;
prcons(fd, "[root::osmora]~ ");
} else {
write(fd, &c, 1);
}
}
return 0;
}
|
