diff options
Diffstat (limited to 'ucspi-tcp-0.88/dns_dtda.c')
-rw-r--r-- | ucspi-tcp-0.88/dns_dtda.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/ucspi-tcp-0.88/dns_dtda.c b/ucspi-tcp-0.88/dns_dtda.c new file mode 100644 index 0000000..00b41a1 --- /dev/null +++ b/ucspi-tcp-0.88/dns_dtda.c @@ -0,0 +1,35 @@ +#include "stralloc.h" +#include "dns.h" + +int dns_domain_todot_cat(stralloc *out,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 += 32; + if (((ch2 >= 'a') && (ch2 <= 'z')) || ((ch2 >= '0') && (ch2 <= '9')) || (ch2 == '-') || (ch2 == '_')) { + if (!stralloc_append(out,&ch2)) return 0; + } + else { + ch3 = ch2; + buf[3] = '0' + (ch3 & 7); ch3 >>= 3; + buf[2] = '0' + (ch3 & 7); ch3 >>= 3; + buf[1] = '0' + (ch3 & 7); + buf[0] = '\\'; + if (!stralloc_catb(out,buf,4)) return 0; + } + } + if (!*d) return 1; + if (!stralloc_append(out,".")) return 0; + } +} |