1#include <netdb.h>
2#include <string.h>
3
4/* do we really need all these?? */
5
6static int idx;
7static const unsigned char protos[] = {
8 "\000ip\0"
9 "\001icmp\0"
10 "\002igmp\0"
11 "\003ggp\0"
12 "\004ipencap\0"
13 "\005st\0"
14 "\006tcp\0"
15 "\010egp\0"
16 "\014pup\0"
17 "\021udp\0"
18 "\024hmp\0"
19 "\026xns-idp\0"
20 "\033rdp\0"
21 "\035iso-tp4\0"
22 "\044xtp\0"
23 "\045ddp\0"
24 "\046idpr-cmtp\0"
25 "\051ipv6\0"
26 "\053ipv6-route\0"
27 "\054ipv6-frag\0"
28 "\055idrp\0"
29 "\056rsvp\0"
30 "\057gre\0"
31 "\062esp\0"
32 "\063ah\0"
33 "\071skip\0"
34 "\072ipv6-icmp\0"
35 "\073ipv6-nonxt\0"
36 "\074ipv6-opts\0"
37 "\111rspf\0"
38 "\121vmtp\0"
39 "\131ospf\0"
40 "\136ipip\0"
41 "\142encap\0"
42 "\147pim\0"
43 "\377raw"
44};
45
46void endprotoent(void)
47{
48 idx = 0;
49}
50
51void setprotoent(int stayopen)
52{
53 idx = 0;
54}
55
56struct protoent *getprotoent(void)
57{
58 static struct protoent p;
59 static const char *aliases;
60 if (idx >= sizeof protos) return NULL;
61 p.p_proto = protos[idx];
62 p.p_name = (char *)&protos[idx+1];
63 p.p_aliases = (char **)&aliases;
64 idx += strlen(p.p_name) + 2;
65 return &p;
66}
67
68struct protoent *getprotobyname(const char *name)
69{
70 struct protoent *p;
71 endprotoent();
72 do p = getprotoent();
73 while (p && strcmp(name, p->p_name));
74 return p;
75}
76
77struct protoent *getprotobynumber(int num)
78{
79 struct protoent *p;
80 endprotoent();
81 do p = getprotoent();
82 while (p && p->p_proto != num);
83 return p;
84}