76 lines
2.8 KiB
C
76 lines
2.8 KiB
C
/*
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* include/ircd_reslib.h
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* (C)opyright 1992 Darren Reed.
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*/
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/** @file
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* @brief Interface from ircd resolver to its support functions.
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* @version $Id: ircd_reslib.h 1231 2004-10-05 04:21:37Z entrope $
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*/
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#ifndef INCLUDED_ircdreslib_h
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#define INCLUDED_ircdreslib_h
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#include <netdb.h>
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/*
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* Inline versions of get/put short/long. Pointer is advanced.
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*/
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/** Get a 16-bit network endian value from \a cp and assign to \a s. */
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#define IRC_NS_GET16(s, cp) { \
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const unsigned char *t_cp = (const unsigned char *)(cp); \
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(s) = ((uint16_t)t_cp[0] << 8) \
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| ((uint16_t)t_cp[1]) \
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; \
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(cp) += NS_INT16SZ; \
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}
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/** Get a 32-bit network endian value from \a cp and assign to \a s. */
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#define IRC_NS_GET32(l, cp) { \
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const unsigned char *t_cp = (const unsigned char *)(cp); \
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(l) = ((uint32_t)t_cp[0] << 24) \
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| ((uint32_t)t_cp[1] << 16) \
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| ((uint32_t)t_cp[2] << 8) \
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| ((uint32_t)t_cp[3]) \
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; \
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(cp) += NS_INT32SZ; \
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}
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/** Put \a s at \a cp as a 16-bit network endian value. */
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#define IRC_NS_PUT16(s, cp) { \
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uint16_t t_s = (uint16_t)(s); \
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unsigned char *t_cp = (unsigned char *)(cp); \
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*t_cp++ = t_s >> 8; \
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*t_cp = t_s; \
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(cp) += NS_INT16SZ; \
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}
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/** Put \a s at \a cp as a 32-bit network endian value. */
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#define IRC_NS_PUT32(l, cp) { \
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uint32_t t_l = (uint32_t)(l); \
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unsigned char *t_cp = (unsigned char *)(cp); \
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*t_cp++ = t_l >> 24; \
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*t_cp++ = t_l >> 16; \
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*t_cp++ = t_l >> 8; \
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*t_cp = t_l; \
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(cp) += NS_INT32SZ; \
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}
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/** Maximum number of nameservers to bother with. */
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#define IRCD_MAXNS 8
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int irc_res_init(void);
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int irc_dn_expand(const unsigned char *msg, const unsigned char *eom, const unsigned char *src, char *dst, int dstsiz);
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int irc_ns_name_uncompress(const unsigned char *msg, const unsigned char *eom, const unsigned char *src, char *dst, size_t dstsiz);
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int irc_ns_name_unpack(const unsigned char *msg, const unsigned char *eom, const unsigned char *src, unsigned char *dst, size_t dstsiz);
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int irc_ns_name_ntop(const char *src, char *dst, size_t dstsiz);
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int irc_dn_comp(const char *src, unsigned char *dst, int dstsiz, unsigned char **dnptrs, unsigned char **lastdnptr);
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int irc_dn_skipname(const unsigned char *ptr, const unsigned char *eom);
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int irc_ns_name_skip(const unsigned char **ptrptr, const unsigned char *eom);
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unsigned int irc_ns_get16(const unsigned char *src);
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unsigned long irc_ns_get32(const unsigned char *src);
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void irc_ns_put16(unsigned int src, unsigned char *dst);
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void irc_ns_put32(unsigned long src, unsigned char *dst);
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int irc_ns_name_pton(const char *src, unsigned char *dst, size_t dstsiz);
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int irc_ns_name_pack(const unsigned char *src, unsigned char *dst, int dstsiz, const unsigned char **dnptrs, const unsigned char **lastdnptr);
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int irc_res_mkquery(const char *dname, int class, int type, unsigned char *buf, int buflen);
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#endif /* INCLUDED_res_h */
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