2 * include/ircd_reslib.h
3 * (C)opyright 1992 Darren Reed.
7 #ifndef INCLUDED_ircdreslib_h
8 #define INCLUDED_ircdreslib_h
13 * Inline versions of get/put short/long. Pointer is advanced.
15 /** Get a 16-bit network endian value from \a cp and assign to \a s. */
16 #define IRC_NS_GET16(s, cp) { \
17 const unsigned char *t_cp = (const unsigned char *)(cp); \
18 (s) = ((uint16_t)t_cp[0] << 8) \
19 | ((uint16_t)t_cp[1]) \
24 /** Get a 32-bit network endian value from \a cp and assign to \a s. */
25 #define IRC_NS_GET32(l, cp) { \
26 const unsigned char *t_cp = (const unsigned char *)(cp); \
27 (l) = ((uint32_t)t_cp[0] << 24) \
28 | ((uint32_t)t_cp[1] << 16) \
29 | ((uint32_t)t_cp[2] << 8) \
30 | ((uint32_t)t_cp[3]) \
35 /** Put \a s at \a cp as a 16-bit network endian value. */
36 #define IRC_NS_PUT16(s, cp) { \
37 uint16_t t_s = (uint16_t)(s); \
38 unsigned char *t_cp = (unsigned char *)(cp); \
44 /** Put \a s at \a cp as a 32-bit network endian value. */
45 #define IRC_NS_PUT32(l, cp) { \
46 uint32_t t_l = (uint32_t)(l); \
47 unsigned char *t_cp = (unsigned char *)(cp); \
48 *t_cp++ = t_l >> 24; \
49 *t_cp++ = t_l >> 16; \
55 /** Maximum number of nameservers to bother with. */
58 int irc_res_init(void);
59 int irc_dn_expand(const unsigned char *msg, const unsigned char *eom, const unsigned char *src, char *dst, int dstsiz);
60 int irc_ns_name_uncompress(const unsigned char *msg, const unsigned char *eom, const unsigned char *src, char *dst, size_t dstsiz);
61 int irc_ns_name_unpack(const unsigned char *msg, const unsigned char *eom, const unsigned char *src, unsigned char *dst, size_t dstsiz);
62 int irc_ns_name_ntop(const char *src, char *dst, size_t dstsiz);
63 int irc_dn_comp(const char *src, unsigned char *dst, int dstsiz, unsigned char **dnptrs, unsigned char **lastdnptr);
64 int irc_dn_skipname(const unsigned char *ptr, const unsigned char *eom);
65 int irc_ns_name_skip(const unsigned char **ptrptr, const unsigned char *eom);
66 unsigned int irc_ns_get16(const unsigned char *src);
67 unsigned long irc_ns_get32(const unsigned char *src);
68 void irc_ns_put16(unsigned int src, unsigned char *dst);
69 void irc_ns_put32(unsigned long src, unsigned char *dst);
70 int irc_ns_name_pton(const char *src, unsigned char *dst, size_t dstsiz);
71 int irc_ns_name_pack(const unsigned char *src, unsigned char *dst, int dstsiz, const unsigned char **dnptrs, const unsigned char **lastdnptr);
72 int irc_res_mkquery(const char *dname, int class, int type, unsigned char *buf, int buflen);
73 #endif /* INCLUDED_res_h */