#include <errno.h>
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#include <string.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include "utils.h"
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static __inline__ u_int16_t dn_htons(u_int16_t addr)
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{
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union {
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u_int8_t byte[2];
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u_int16_t word;
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} u;
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u.word = addr;
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return ((u_int16_t)u.byte[0]) | (((u_int16_t)u.byte[1]) << 8);
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}
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static int dnet_num(const char *src, u_int16_t * dst)
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{
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int rv = 0;
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int tmp;
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*dst = 0;
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while ((tmp = *src++) != 0) {
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tmp -= '0';
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if ((tmp < 0) || (tmp > 9))
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return rv;
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rv++;
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(*dst) *= 10;
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(*dst) += tmp;
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}
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return rv;
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}
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static int dnet_pton1(const char *src, struct dn_naddr *dna)
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{
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u_int16_t addr;
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u_int16_t area = 0;
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u_int16_t node = 0;
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int pos;
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pos = dnet_num(src, &area);
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if ((pos == 0) || (area > 63) || (*(src + pos) != '.'))
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return 0;
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pos = dnet_num(src + pos + 1, &node);
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if ((pos == 0) || (node > 1023))
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return 0;
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dna->a_len = 2;
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addr = dn_htons((area << 10) | node);
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memcpy(dna->a_addr, &addr, sizeof(addr));
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return 1;
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}
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int dnet_pton(int af, const char *src, void *addr)
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{
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int err;
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switch (af) {
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case AF_DECnet:
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errno = 0;
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err = dnet_pton1(src, (struct dn_naddr *)addr);
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break;
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default:
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errno = EAFNOSUPPORT;
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err = -1;
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}
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return err;
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}
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