Merge branch 'u2_10_12_branch' of git://git.code.sf.net/p/undernet-ircu/ircu2

[ircu2.10.12-pk.git] / include / ircd_reslib.h

diff --git a/include/ircd_reslib.h b/include/ircd_reslib.h
new file mode 100644 (file)
index 0000000..fae4156
--- /dev/null
+++ b/include/ircd_reslib.h
@@ -0,0 +1,75 @@
+/*
+ * include/ircd_reslib.h
+ * (C)opyright 1992 Darren Reed.
+ */
+/** @file
+ * @brief Interface from ircd resolver to its support functions.
+ * @version $Id$
+ */
+#ifndef INCLUDED_ircdreslib_h
+#define INCLUDED_ircdreslib_h
+
+#include <netdb.h>
+
+/*
+ * Inline versions of get/put short/long.  Pointer is advanced.
+ */
+/** Get a 16-bit network endian value from \a cp and assign to \a s. */
+#define IRC_NS_GET16(s, cp) { \
+       const unsigned char *t_cp = (const unsigned char *)(cp); \
+       (s) = ((uint16_t)t_cp[0] << 8) \
+           | ((uint16_t)t_cp[1]) \
+           ; \
+       (cp) += NS_INT16SZ; \
+}
+
+/** Get a 32-bit network endian value from \a cp and assign to \a s. */
+#define IRC_NS_GET32(l, cp) { \
+       const unsigned char *t_cp = (const unsigned char *)(cp); \
+       (l) = ((uint32_t)t_cp[0] << 24) \
+           | ((uint32_t)t_cp[1] << 16) \
+           | ((uint32_t)t_cp[2] << 8) \
+           | ((uint32_t)t_cp[3]) \
+           ; \
+       (cp) += NS_INT32SZ; \
+}
+
+/** Put \a s at \a cp as a 16-bit network endian value. */
+#define IRC_NS_PUT16(s, cp) { \
+       uint16_t t_s = (uint16_t)(s); \
+       unsigned char *t_cp = (unsigned char *)(cp); \
+       *t_cp++ = t_s >> 8; \
+       *t_cp   = t_s; \
+       (cp) += NS_INT16SZ; \
+}
+
+/** Put \a s at \a cp as a 32-bit network endian value. */
+#define IRC_NS_PUT32(l, cp) { \
+       uint32_t t_l = (uint32_t)(l); \
+       unsigned char *t_cp = (unsigned char *)(cp); \
+       *t_cp++ = t_l >> 24; \
+       *t_cp++ = t_l >> 16; \
+       *t_cp++ = t_l >> 8; \
+       *t_cp   = t_l; \
+       (cp) += NS_INT32SZ; \
+}
+
+/** Maximum number of nameservers to bother with. */
+#define IRCD_MAXNS 8
+
+int irc_res_init(void);
+int irc_dn_expand(const unsigned char *msg, const unsigned char *eom, const unsigned char *src, char *dst, int dstsiz);
+int irc_ns_name_uncompress(const unsigned char *msg, const unsigned char *eom, const unsigned char *src, char *dst, size_t dstsiz);
+int irc_ns_name_unpack(const unsigned char *msg, const unsigned char *eom, const unsigned char *src, unsigned char *dst, size_t dstsiz);
+int irc_ns_name_ntop(const char *src, char *dst, size_t dstsiz);
+int irc_dn_comp(const char *src, unsigned char *dst, int dstsiz, unsigned char **dnptrs, unsigned char **lastdnptr);
+int irc_dn_skipname(const unsigned char *ptr, const unsigned char *eom);
+int irc_ns_name_skip(const unsigned char **ptrptr, const unsigned char *eom);
+unsigned int irc_ns_get16(const unsigned char *src);
+unsigned long irc_ns_get32(const unsigned char *src);
+void irc_ns_put16(unsigned int src, unsigned char *dst);
+void irc_ns_put32(unsigned long src, unsigned char *dst);
+int irc_ns_name_pton(const char *src, unsigned char *dst, size_t dstsiz);
+int irc_ns_name_pack(const unsigned char *src, unsigned char *dst, int dstsiz, const unsigned char **dnptrs, const unsigned char **lastdnptr);
+int irc_res_mkquery(const char *dname, int class, int type, unsigned char *buf, int buflen);
+#endif /* INCLUDED_res_h */