Commit | Line | Data |
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85bbbfa4 | 1 | #ifndef lint |
55d340a4 | 2 | static char sccsid[] = "@(#)af.c 4.11 (Berkeley) %G%"; |
85bbbfa4 SL |
3 | #endif |
4 | ||
7fe7fe74 | 5 | #include "defs.h" |
ecce71aa | 6 | |
85bbbfa4 SL |
7 | /* |
8 | * Address family support routines | |
9 | */ | |
10 | int null_hash(), null_netmatch(), null_output(), | |
a773b026 SL |
11 | null_portmatch(), null_portcheck(), |
12 | null_checkhost(), null_canon(); | |
85bbbfa4 | 13 | int inet_hash(), inet_netmatch(), inet_output(), |
a773b026 SL |
14 | inet_portmatch(), inet_portcheck(), |
15 | inet_checkhost(), inet_canon(); | |
85bbbfa4 SL |
16 | #define NIL \ |
17 | { null_hash, null_netmatch, null_output, \ | |
a773b026 SL |
18 | null_portmatch, null_portcheck, null_checkhost, \ |
19 | null_canon } | |
85bbbfa4 SL |
20 | #define INET \ |
21 | { inet_hash, inet_netmatch, inet_output, \ | |
a773b026 SL |
22 | inet_portmatch, inet_portcheck, inet_checkhost, \ |
23 | inet_canon } | |
85bbbfa4 SL |
24 | |
25 | struct afswitch afswitch[AF_MAX] = | |
26 | { NIL, NIL, INET, INET, NIL, NIL, NIL, NIL, NIL, NIL, NIL }; | |
27 | ||
28 | inet_hash(sin, hp) | |
29 | register struct sockaddr_in *sin; | |
30 | struct afhash *hp; | |
31 | { | |
32 | ||
68a24a8f | 33 | hp->afh_nethash = inet_netof(sin->sin_addr); |
7fe7fe74 | 34 | hp->afh_hosthash = ntohl(sin->sin_addr.s_addr); |
6db0b3a4 | 35 | hp->afh_hosthash &= 0x7fffffff; |
85bbbfa4 SL |
36 | } |
37 | ||
38 | inet_netmatch(sin1, sin2) | |
39 | struct sockaddr_in *sin1, *sin2; | |
40 | { | |
41 | ||
68a24a8f | 42 | return (inet_netof(sin1->sin_addr) == inet_netof(sin2->sin_addr)); |
85bbbfa4 SL |
43 | } |
44 | ||
45 | /* | |
46 | * Verify the message is from the right port. | |
47 | */ | |
48 | inet_portmatch(sin) | |
c8c4156e | 49 | register struct sockaddr_in *sin; |
85bbbfa4 | 50 | { |
6db0b3a4 | 51 | |
7fe7fe74 SL |
52 | #ifdef COMPAT |
53 | if (ntohs(sin->sin_port) == ntohs(sp->s_port) + 1) | |
54 | return (1); | |
6db0b3a4 | 55 | #endif |
7fe7fe74 | 56 | return (sin->sin_port == sp->s_port); |
85bbbfa4 SL |
57 | } |
58 | ||
a773b026 SL |
59 | /* |
60 | * Verify the message is from a "trusted" port. | |
61 | */ | |
62 | inet_portcheck(sin) | |
7fe7fe74 | 63 | struct sockaddr_in *sin; |
a773b026 | 64 | { |
a773b026 | 65 | |
7fe7fe74 | 66 | return (ntohs(sin->sin_port) <= IPPORT_RESERVED); |
a773b026 SL |
67 | } |
68 | ||
85bbbfa4 SL |
69 | /* |
70 | * Internet output routine. | |
71 | */ | |
7fe7fe74 SL |
72 | inet_output(s, flags, sin, size) |
73 | int s, flags; | |
85bbbfa4 SL |
74 | struct sockaddr_in *sin; |
75 | int size; | |
76 | { | |
85bbbfa4 SL |
77 | struct sockaddr_in dst; |
78 | ||
79 | dst = *sin; | |
80 | sin = &dst; | |
c8c4156e | 81 | if (sin->sin_port == 0) |
7fe7fe74 SL |
82 | sin->sin_port = sp->s_port; |
83 | if (sendto(s, packet, size, flags, sin, sizeof (*sin)) < 0) | |
84 | perror("sendto"); | |
85bbbfa4 SL |
85 | } |
86 | ||
87 | /* | |
0ad851d4 SL |
88 | * Return 1 if the address is believed |
89 | * for an Internet host -- THIS IS A KLUDGE. | |
85bbbfa4 SL |
90 | */ |
91 | inet_checkhost(sin) | |
92 | struct sockaddr_in *sin; | |
93 | { | |
7fe7fe74 | 94 | |
68a24a8f | 95 | return (inet_lnaof(sin->sin_addr) != 0); |
85bbbfa4 SL |
96 | } |
97 | ||
98 | inet_canon(sin) | |
99 | struct sockaddr_in *sin; | |
100 | { | |
7fe7fe74 | 101 | |
85bbbfa4 SL |
102 | sin->sin_port = 0; |
103 | } | |
104 | ||
105 | /*ARGSUSED*/ | |
106 | null_hash(addr, hp) | |
107 | struct sockaddr *addr; | |
108 | struct afhash *hp; | |
109 | { | |
110 | ||
111 | hp->afh_nethash = hp->afh_hosthash = 0; | |
112 | } | |
113 | ||
114 | /*ARGSUSED*/ | |
115 | null_netmatch(a1, a2) | |
116 | struct sockaddr *a1, *a2; | |
117 | { | |
118 | ||
119 | return (0); | |
120 | } | |
121 | ||
122 | /*ARGSUSED*/ | |
7fe7fe74 SL |
123 | null_output(s, f, a1, n) |
124 | int s, f; | |
85bbbfa4 SL |
125 | struct sockaddr *a1; |
126 | int n; | |
127 | { | |
6db0b3a4 | 128 | |
85bbbfa4 SL |
129 | ; |
130 | } | |
131 | ||
132 | /*ARGSUSED*/ | |
133 | null_portmatch(a1) | |
134 | struct sockaddr *a1; | |
135 | { | |
6db0b3a4 | 136 | |
85bbbfa4 SL |
137 | return (0); |
138 | } | |
139 | ||
a773b026 SL |
140 | /*ARGSUSED*/ |
141 | null_portcheck(a1) | |
142 | struct sockaddr *a1; | |
143 | { | |
6db0b3a4 | 144 | |
a773b026 SL |
145 | return (0); |
146 | } | |
147 | ||
85bbbfa4 SL |
148 | /*ARGSUSED*/ |
149 | null_checkhost(a1) | |
150 | struct sockaddr *a1; | |
151 | { | |
6db0b3a4 | 152 | |
85bbbfa4 SL |
153 | return (0); |
154 | } | |
155 | ||
156 | /*ARGSUSED*/ | |
157 | null_canon(a1) | |
158 | struct sockaddr *a1; | |
159 | { | |
6db0b3a4 | 160 | |
85bbbfa4 SL |
161 | ; |
162 | } |