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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*****************************************************************************
**
** parse_cl.c
**
** Sat Mar 7 11:57:10 1998
** mike@cathmike (Mike Borella)
**
** Main command line parsing routines
**
** Automatically created by genparse v0.2.2
**
** See http://www.xnet.com/~cathmike/MSB/Software/ for details
**
*****************************************************************************/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include "parse_cl.h"
/*----------------------------------------------------------------------------
*
* usage()
*
*----------------------------------------------------------------------------
*/
void usage(char *exc)
{
printf("usage: %s [ -ciplnt ]\n", exc);
printf(" [ -c ] ");
printf("[ --count ] ");
printf("Exit after receiving 'count' packets");
printf("\n");
printf(" [ -i ] ");
printf("[ --interface ] ");
printf("Listen on interface 'interface'");
printf("\n");
printf(" [ -p ] ");
printf("Dump packet payloads");
printf("\n");
printf(" [ -l ] ");
printf("Don't print link-layer headers");
printf("\n");
printf(" [ -n ] ");
printf("Don't print network-layer headers");
printf("\n");
printf(" [ -t ] ");
printf("Don't print transport-layer headers");
printf("\n");
exit(1);
}
/*----------------------------------------------------------------------------
*
* free_args()
*
*----------------------------------------------------------------------------
*/
void free_args(struct arg_t *my_arg)
{
if (my_arg->i != NULL) free(my_arg->i);
free(my_arg);
}
/*----------------------------------------------------------------------------
*
* parse_cl()
*
*----------------------------------------------------------------------------
*/
struct arg_t *parse_cl(int argc, char *argv[])
{
extern char *optarg;
extern int optind;
int option_index = 0;
char c;
struct arg_t *my_arg;
int errflg = 0;
static struct option long_options[] =
{
{"count", 1, 0, 'c'},
{"interface", 1, 0, 'i'},
{"", 1, 0, 'p'},
{"", 1, 0, 'l'},
{"", 1, 0, 'n'},
{"", 1, 0, 't'},
{0, 0, 0, 0}
};
my_arg = (struct arg_t *) malloc (sizeof(struct arg_t));
my_arg->i = NULL;
my_arg->p = 0;
my_arg->l = 0;
my_arg->n = 0;
my_arg->t = 0;
while ((c = getopt_long(argc, argv, "c:i:plnt", long_options, &option_index)) != EOF)
{
switch(c)
{
case 'c':
my_arg->c = atoi(optarg);
if (my_arg->c < 1)
{
fprintf(stderr, "parameter range error: c must be >= 1\n");
errflg ++;
}
break;
case 'i':
my_arg->i = strdup(optarg);
break;
case 'p':
my_arg->p ++;
break;
case 'l':
my_arg->l ++;
break;
case 'n':
my_arg->n ++;
break;
case 't':
my_arg->t ++;
break;
default:
usage(argv[0]);
}
} /* while */
if (errflg)
usage(argv[0]);
if (!(my_arg))
usage(argv[0]);
my_arg->optind = optind;
return my_arg;
}
|
