Mirror of :pserver:cvs@cvs.fefe.de:/cvs libowfat https://www.fefe.de/libowfat/
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#include "stralloc.h"
#include "dns.h"
int dns_domain_todot_cat(stralloc *out,const char *d)
{
char ch;
char ch2;
unsigned char ch3;
char buf[4];
if (!*d)
return stralloc_append(out,".");
for (;;) {
ch = *d++;
while (ch--) {
ch2 = *d++;
if ((ch2 >= 'A') && (ch2 <= 'Z'))
ch2 = (char)(ch2 + 32);
if (((ch2 >= 'a') && (ch2 <= 'z')) || ((ch2 >= '0') && (ch2 <= '9')) || (ch2 == '-') || (ch2 == '_')) {
if (!stralloc_append(out,&ch2)) return 0;
}
else {
ch3 = (unsigned char)ch2;
buf[3] = (char)('0' + (ch3 & 7)); ch3 >>= 3;
buf[2] = (char)('0' + (ch3 & 7)); ch3 >>= 3;
buf[1] = (char)('0' + (ch3 & 7));
buf[0] = '\\';
if (!stralloc_catb(out,buf,4)) return 0;
}
}
if (!*d) return 1;
if (!stralloc_append(out,".")) return 0;
}
}