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| 20 | */ |
20 | */ |
| 21 | |
21 | |
| 22 | #ifndef UTIL_H__ |
22 | #ifndef UTIL_H__ |
| 23 | #define UTIL_H__ |
23 | #define UTIL_H__ |
| 24 | |
24 | |
| 25 | #include <sys/socket.h> |
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| 26 | #include <netinet/in.h> |
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| 27 | |
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| 28 | #include <map> |
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| 29 | |
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| 30 | #include "iom.h" |
25 | #include "iom.h" |
| 31 | #include "device.h" |
26 | #include "device.h" |
| 32 | |
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| 33 | #define SOCKADDR sockaddr_in // this is lame, I know |
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| 34 | |
27 | |
| 35 | /* |
28 | /* |
| 36 | * check for an existing vped for this net, and write pid to pidfile |
29 | * check for an existing vped for this net, and write pid to pidfile |
| 37 | */ |
30 | */ |
| 38 | extern int write_pidfile (void); |
31 | extern int write_pidfile (void); |
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| 70 | p[5] = id; |
63 | p[5] = id; |
| 71 | } |
64 | } |
| 72 | |
65 | |
| 73 | #define mac2id(p) (p[0] & 0x01 ? 0 : (p[4] << 8) | p[5]) |
66 | #define mac2id(p) (p[0] & 0x01 ? 0 : (p[4] << 8) | p[5]) |
| 74 | |
67 | |
| 75 | struct sockinfo |
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| 76 | { |
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| 77 | u32 host; |
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| 78 | u16 port; |
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| 79 | |
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| 80 | void set (const SOCKADDR *sa) |
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| 81 | { |
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| 82 | host = sa->sin_addr.s_addr; |
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| 83 | port = sa->sin_port; |
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| 84 | } |
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| 85 | |
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| 86 | sockinfo() |
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| 87 | { |
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| 88 | host = port = 0; |
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| 89 | } |
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| 90 | |
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| 91 | sockinfo(const SOCKADDR &sa) |
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| 92 | { |
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| 93 | set (&sa); |
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| 94 | } |
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| 95 | |
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| 96 | sockinfo(const SOCKADDR *sa) |
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| 97 | { |
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| 98 | set (sa); |
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| 99 | } |
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| 100 | |
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| 101 | SOCKADDR *sa() |
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| 102 | { |
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| 103 | static SOCKADDR sa; |
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| 104 | |
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| 105 | sa.sin_family = AF_INET; |
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| 106 | sa.sin_port = port; |
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| 107 | sa.sin_addr.s_addr = host; |
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| 108 | |
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| 109 | return &sa; |
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| 110 | } |
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| 111 | |
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| 112 | operator const char *(); |
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| 113 | }; |
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| 114 | |
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| 115 | inline bool |
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| 116 | operator == (const sockinfo &a, const sockinfo &b) |
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| 117 | { |
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| 118 | return a.host == b.host && a.port == b.port; |
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| 119 | } |
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| 120 | |
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| 121 | inline bool |
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| 122 | operator < (const sockinfo &a, const sockinfo &b) |
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| 123 | { |
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| 124 | return a.host < b.host |
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| 125 | || (a.host == b.host && a.port < b.port); |
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| 126 | } |
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| 127 | |
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| 128 | struct sliding_window { |
68 | struct sliding_window { |
| 129 | u32 v[(WINDOWSIZE + 31) / 32]; |
69 | u32 v[(WINDOWSIZE + 31) / 32]; |
| 130 | u32 seq; |
70 | u32 seq; |
| 131 | |
71 | |
| 132 | void reset (u32 seqno) |
72 | void reset (u32 seqno) |
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| 158 | |
98 | |
| 159 | u32 s = seqno % WINDOWSIZE; |
99 | u32 s = seqno % WINDOWSIZE; |
| 160 | u32 *cell = v + (s >> 5); |
100 | u32 *cell = v + (s >> 5); |
| 161 | u32 mask = 1 << (s & 31); |
101 | u32 mask = 1 << (s & 31); |
| 162 | |
102 | |
| 163 | //printf ("received seqno %08lx, seq %08lx, mask %08lx is %08lx\n", seqno, seq, mask, ismask); |
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| 164 | if (*cell & mask) |
103 | if (*cell & mask) |
| 165 | { |
104 | { |
| 166 | slog (L_ERR, _("received duplicate packet (received %08lx, expected %08lx)\n" |
105 | slog (L_ERR, _("received duplicate packet (received %08lx, expected %08lx)\n" |
| 167 | "possible replay attack, or just packet duplication"), seqno, seq + 1);//D |
106 | "possible replay attack, or just packet duplication"), seqno, seq + 1);//D |
| 168 | return false; |
107 | return false; |
