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47 lines
586 B
C
47 lines
586 B
C
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#include <u.h>
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#include <ctype.h>
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/*
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* return ndb attribute type of an ip name
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*/
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char*
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ipattr(char *name)
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{
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char *p, c;
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int dot = 0;
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int alpha = 0;
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int colon = 0;
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int hex = 0;
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for(p = name; *p; p++){
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c = *p;
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if(isdigit(c))
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continue;
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if(isxdigit(c))
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hex = 1;
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else if(isalpha(c) || c == '-')
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alpha = 1;
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else if(c == '.')
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dot = 1;
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else if(c == ':')
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colon = 1;
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else
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return "sys";
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}
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if(alpha){
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if(dot)
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return "dom";
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else
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return "sys";
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}
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if(colon)
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return "ip"; /* ip v6 */
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if(dot && !hex)
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return "ip";
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else
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return "sys";
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}
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