33 lines
628 B
C
33 lines
628 B
C
#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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in_addr_t inet_network(const char *p)
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{
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return ntohl(inet_addr(p));
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}
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struct in_addr inet_makeaddr(in_addr_t n, in_addr_t h)
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{
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if (n < 256) h |= n<<24;
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else if (n < 65536) h |= n<<16;
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else h |= n<<8;
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return (struct in_addr){ h };
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}
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in_addr_t inet_lnaof(struct in_addr in)
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{
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uint32_t h = in.s_addr;
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if (h>>24 < 128) return h & 0xffffff;
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if (h>>24 < 192) return h & 0xffff;
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return h & 0xff;
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}
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in_addr_t inet_netof(struct in_addr in)
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{
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uint32_t h = in.s_addr;
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if (h>>24 < 128) return h >> 24;
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if (h>>24 < 192) return h >> 16;
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return h >> 8;
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}
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