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