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[READ-ONLY] Mirror of https://github.com/VibeDevelopers/Comet.
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127/* * include/irc_reslib.h * */
#ifndef _SOLANUM_RESLIB_H#define _SOLANUM_RESLIB_H
/* Longest hostname we're willing to work with. * Due to DNSBLs this is more than HOSTLEN. */#define IRCD_RES_HOSTLEN 255
/* Here we define some values lifted from nameser.h */#define NS_NOTIFY_OP 4#define NS_INT16SZ 2#define NS_IN6ADDRSZ 16#define NS_INADDRSZ 4#define NS_INT32SZ 4#define NS_CMPRSFLGS 0xc0#define NS_MAXCDNAME 255#define QUERY 0#define IQUERY 1#define NO_ERRORS 0#define SERVFAIL 2#define NXDOMAIN 3#define NOTIMP 4#define REFUSED 5#define T_A 1#define T_AAAA 28#define T_PTR 12#define T_CNAME 5#define T_NULL 10#define C_IN 1#define QFIXEDSZ 4#define RRFIXEDSZ 10#define HFIXEDSZ 12
typedef struct{ unsigned id :16; /* query identification number */#ifdef WORDS_BIGENDIAN /* fields in third byte */ unsigned qr: 1; /* response flag */ unsigned opcode: 4; /* purpose of message */ unsigned aa: 1; /* authoritive answer */ unsigned tc: 1; /* truncated message */ unsigned rd: 1; /* recursion desired */ /* fields in fourth byte */ unsigned ra: 1; /* recursion available */ unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */ unsigned ad: 1; /* authentic data from named */ unsigned cd: 1; /* checking disabled by resolver */ unsigned rcode :4; /* response code */#else /* fields in third byte */ unsigned rd :1; /* recursion desired */ unsigned tc :1; /* truncated message */ unsigned aa :1; /* authoritive answer */ unsigned opcode :4; /* purpose of message */ unsigned qr :1; /* response flag */ /* fields in fourth byte */ unsigned rcode :4; /* response code */ unsigned cd: 1; /* checking disabled by resolver */ unsigned ad: 1; /* authentic data from named */ unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */ unsigned ra :1; /* recursion available */#endif /* remaining bytes */ unsigned qdcount :16; /* number of question entries */ unsigned ancount :16; /* number of answer entries */ unsigned nscount :16; /* number of authority entries */ unsigned arcount :16; /* number of resource entries */} HEADER;
/* * Inline versions of get/put short/long. Pointer is advanced. */#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; \}
#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; \}
#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; \}
#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; \}
extern int irc_res_init(void);extern int irc_dn_expand(const unsigned char *msg, const unsigned char *eom, const unsigned char *src, char *dst, int dstsiz);extern int irc_dn_skipname(const unsigned char *ptr, const unsigned char *eom);extern unsigned int irc_ns_get16(const unsigned char *src);extern unsigned long irc_ns_get32(const unsigned char *src);extern void irc_ns_put16(unsigned int src, unsigned char *dst);extern void irc_ns_put32(unsigned long src, unsigned char *dst);extern int irc_res_mkquery(const char *dname, int class, int type, unsigned char *buf, int buflen);
extern char irc_domain[IRCD_RES_HOSTLEN + 1];
#endif