… | |
… | |
46 | { |
46 | { |
47 | len = pkt.len; |
47 | len = pkt.len; |
48 | memcpy (&((*this)[0]), &(pkt[0]), len); |
48 | memcpy (&((*this)[0]), &(pkt[0]), len); |
49 | } |
49 | } |
50 | |
50 | |
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51 | bool is_ipv4 () const |
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52 | { |
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53 | return (*this)[12] == 0x08 && (*this)[13] == 0x00 // IP |
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54 | && ((*this)[14] & 0xf0) == 0x40; // IPv4 |
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55 | } |
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56 | |
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57 | u32 &ipv4_src () const |
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58 | { |
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59 | return *(u32 *)&(*this)[26]; |
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60 | } |
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61 | |
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62 | u32 &ipv4_dst () const |
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63 | { |
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64 | return *(u32 *)&(*this)[30]; |
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65 | } |
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66 | |
51 | bool is_arp () |
67 | bool is_arp () const |
52 | { |
68 | { |
53 | return (*this)[12] == 0x08 && (*this)[13] == 0x06 // 0806 protocol |
69 | return (*this)[12] == 0x08 && (*this)[13] == 0x06 // 0806 protocol |
54 | && (*this)[14] == 0x00 && (*this)[15] == 0x01 // 0001 hw_format |
70 | && (*this)[14] == 0x00 && (*this)[15] == 0x01 // 0001 hw_format |
55 | && (*this)[16] == 0x08 && (*this)[17] == 0x00 // 0800 prot_format |
71 | && (*this)[16] == 0x08 && (*this)[17] == 0x00 // 0800 prot_format |
56 | && (*this)[18] == 0x06 && (*this)[19] == 0x04; // 06 hw_len 04 prot_len |
72 | && (*this)[18] == 0x06 && (*this)[19] == 0x04; // 06 hw_len 04 prot_len |
… | |
… | |
76 | mac dst; |
92 | mac dst; |
77 | mac src; |
93 | mac src; |
78 | u8 data[MAXSIZE - 12]; |
94 | u8 data[MAXSIZE - 12]; |
79 | }; |
95 | }; |
80 | |
96 | |
81 | struct tap_device_base { |
97 | struct tap_device { |
82 | int fd; |
98 | int fd; |
83 | |
99 | |
84 | // network interface name or identifier |
100 | // network interface name or identifier |
85 | char ifrname[IFNAMESIZE + 1]; |
101 | char ifrname[IFNAMESIZE + 1]; |
86 | |
102 | |
87 | char *device; |
103 | char *device; |
88 | |
104 | |
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105 | tap_device (); |
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106 | ~tap_device (); |
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107 | |
89 | bool open (); |
108 | //bool open (); |
90 | void close (); |
109 | //void close (); |
91 | |
110 | |
92 | const char *interface () { return ifrname; } |
111 | const char *interface () { return ifrname; } |
93 | const char *info (); |
112 | const char *info (); |
94 | |
113 | |
95 | tap_packet *recv (); |
114 | tap_packet *recv (); |
96 | void send (tap_packet *pkt); |
115 | void send (tap_packet *pkt); |
97 | }; |
116 | }; |
98 | |
117 | |
99 | struct tap_device; |
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100 | |
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101 | extern tap_device tap; |
118 | //extern tap_device *tap_device (); |
102 | |
119 | |
103 | #endif |
120 | #endif |
104 | |
121 | |