-
Notifications
You must be signed in to change notification settings - Fork 0
/
ph_dhcp.cc
104 lines (78 loc) · 2.63 KB
/
ph_dhcp.cc
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
#include <netz.h>
#include "hr_type.h"
#include "support.h"
#include "ph_packet.h"
c_string dhcp_packet_handler(c_packet_info packet_info)
{
c_string output_string;
c_dhcp_header header(packet_info.packet);
output_string.add((char *)"DHCP\tOP %u (",
header.get_op());
switch (header.get_op())
{
case DHCP_OP_BOOTREQUEST:
output_string.add((char *)"Boot Request");
break;
case DHCP_OP_BOOTREPLY:
output_string.add((char *)"Boot Reply");
break;
default:
output_string.add((char *)"Unknown");
break;
}
output_string.add((char *)") ");
output_string.add_hex((char *)"HRTYPE 0x%02X%02X (",
(word)header.get_hrtype());
output_string += print_arp_hrtype(header.get_hrtype());
output_string.add((char *)") ");
output_string.add((char *)"HRLEN %u HOPS %u\n",
header.get_hrlen(),
header.get_hops());
output_string.add((char *)"\tXID %u SECS %u",
header.get_xid(),
header.get_secs());
output_string.add_hex((char *)"\tFLAGS 0x%02X%02X |",
header.get_flags());
if (header.get_flag_b())
{
output_string.add((char *)"B|");
}
else
{
output_string.add((char *)" |");
}
output_string.add((char *)"\n");
string ciaddr_string[16];
string yiaddr_string[16];
string siaddr_string[16];
string giaddr_string[16];
conv_ip_str(ciaddr_string, header.get_ciaddr());
conv_ip_str(yiaddr_string, header.get_yiaddr());
conv_ip_str(siaddr_string, header.get_siaddr());
conv_ip_str(giaddr_string, header.get_giaddr());
output_string.add((char *)"\tCLIENT IP ADDR %s YOUR IP ADDR %s\n"
"\tSERVER IP ADDR %s GATEWAY IP ADDR %s\n",
ciaddr_string,
yiaddr_string,
siaddr_string,
giaddr_string);
switch (header.get_hrtype())
{
case ARP_HRTYPE_ETHER:
string mac_addr_str[32];
output_string.add((char *)"\tCLIENT MAC ADDR %s",
conv_ether_str(mac_addr_str, header.get_chaddr()));
break;
default:
output_string.add((char *)"\t*** CLIENT HARDWARE ADDRESS NOT SUPPORTED ***");
}
output_string.add((char *)"\n");
if (header.get_sname()[0])
{
output_string.add((char *)"\tSNAME %s\n",
header.get_sname());
}
output_string += debug(packet_info);
output_string += print_line();
return output_string;
}