45 lines
899 B
C
45 lines
899 B
C
#include "wireless.h"
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#include "inet_pton.h"
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int inet_pton4(const char *src, unsigned char *dst) {
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static const char digits[] = "0123456789";
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int saw_digit, octets, ch;
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unsigned char tmp[INADDRSZ], *tp;
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saw_digit = 0;
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octets = 0;
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tp = tmp;
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*tp = 0;
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while((ch = *src++) != '\0') {
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const char *pch;
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if((pch = strchr(digits, ch)) != NULL) {
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unsigned int val = *tp * 10 + (unsigned int)(pch - digits);
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if(saw_digit && *tp == 0)
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return (0);
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if(val > 255)
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return (0);
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*tp = (unsigned char)val;
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if(! saw_digit) {
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if(++octets > 4)
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return (0);
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saw_digit = 1;
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}
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}
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else if(ch == '.' && saw_digit) {
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if(octets == 4)
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return (0);
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*++tp = 0;
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saw_digit = 0;
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}
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else
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return (0);
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}
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if(octets < 4)
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return (0);
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memcpy(dst, tmp, INADDRSZ);
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return (1);
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}
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