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36 lines
816 B
C
36 lines
816 B
C
#include "stralloc.h"
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#include "dns.h"
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int dns_domain_todot_cat(stralloc *out,const char *d)
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{
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char ch;
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char ch2;
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unsigned char ch3;
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char buf[4];
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if (!*d)
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return stralloc_append(out,".");
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for (;;) {
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ch = *d++;
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while (ch--) {
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ch2 = *d++;
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if ((ch2 >= 'A') && (ch2 <= 'Z'))
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ch2 = (char)(ch2 + 32);
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if (((ch2 >= 'a') && (ch2 <= 'z')) || ((ch2 >= '0') && (ch2 <= '9')) || (ch2 == '-') || (ch2 == '_')) {
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if (!stralloc_append(out,&ch2)) return 0;
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}
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else {
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ch3 = (unsigned char)ch2;
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buf[3] = (char)('0' + (ch3 & 7)); ch3 >>= 3;
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buf[2] = (char)('0' + (ch3 & 7)); ch3 >>= 3;
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buf[1] = (char)('0' + (ch3 & 7));
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buf[0] = '\\';
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if (!stralloc_catb(out,buf,4)) return 0;
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}
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}
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if (!*d) return 1;
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if (!stralloc_append(out,".")) return 0;
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}
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}
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