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/* |
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* include/irc_res.h for referencing functions in src/irc_res.c |
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* |
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* $Id$ |
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*/ |
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|
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#ifndef INCLUDED_irc_res_h |
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#define INCLUDED_irc_res_h |
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|
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#include "listener.h" |
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#include "setup.h" |
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|
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/* Here we define some values lifted from nameser.h */ |
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#define NS_NOTIFY_OP 4 |
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#define NS_INT16SZ 2 |
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#define NS_IN6ADDRSZ 16 |
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#define NS_INADDRSZ 4 |
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#define NS_INT32SZ 4 |
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#define NS_CMPRSFLGS 0xc0 |
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#define NS_MAXCDNAME 255 |
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#define QUERY 0 |
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#define IQUERY 1 |
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#define NO_ERRORS 0 |
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#define SERVFAIL 2 |
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#define T_A 1 |
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#define T_AAAA 28 |
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#define T_PTR 12 |
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#define T_CNAME 5 |
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#define T_NULL 10 |
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#define C_IN 1 |
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#define QFIXEDSZ 4 |
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#define RRFIXEDSZ 10 |
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#define HFIXEDSZ 12 |
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|
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struct DNSReply |
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{ |
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char *h_name; |
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struct irc_ssaddr addr; |
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}; |
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|
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struct DNSQuery |
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{ |
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#ifdef _WIN32 |
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dlink_node node; |
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HANDLE handle; |
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char reply[MAXGETHOSTSTRUCT]; |
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#endif |
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void *ptr; /* pointer used by callback to identify request */ |
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void (*callback)(void* vptr, struct DNSReply *reply); /* callback to call */ |
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}; |
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|
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typedef struct |
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{ |
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unsigned id :16; /* query identification number */ |
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#ifdef WORDS_BIGENDIAN |
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/* fields in third byte */ |
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unsigned qr: 1; /* response flag */ |
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unsigned opcode: 4; /* purpose of message */ |
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unsigned aa: 1; /* authoritive answer */ |
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unsigned tc: 1; /* truncated message */ |
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unsigned rd: 1; /* recursion desired */ |
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/* fields in fourth byte */ |
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unsigned ra: 1; /* recursion available */ |
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unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */ |
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unsigned ad: 1; /* authentic data from named */ |
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unsigned cd: 1; /* checking disabled by resolver */ |
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unsigned rcode :4; /* response code */ |
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#else |
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/* fields in third byte */ |
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unsigned rd :1; /* recursion desired */ |
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unsigned tc :1; /* truncated message */ |
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unsigned aa :1; /* authoritive answer */ |
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unsigned opcode :4; /* purpose of message */ |
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unsigned qr :1; /* response flag */ |
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/* fields in fourth byte */ |
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unsigned rcode :4; /* response code */ |
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unsigned cd: 1; /* checking disabled by resolver */ |
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unsigned ad: 1; /* authentic data from named */ |
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unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */ |
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unsigned ra :1; /* recursion available */ |
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#endif |
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/* remaining bytes */ |
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unsigned qdcount :16; /* number of question entries */ |
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unsigned ancount :16; /* number of answer entries */ |
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unsigned nscount :16; /* number of authority entries */ |
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unsigned arcount :16; /* number of resource entries */ |
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} HEADER; |
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|
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extern void init_resolver(void); |
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extern void restart_resolver(void); |
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extern void delete_resolver_queries(const struct DNSQuery *); |
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extern void report_dns_servers(struct Client *); |
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extern void gethost_byname_type(const char *, struct DNSQuery *, int); |
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extern void gethost_byname(const char *, struct DNSQuery *); |
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extern void gethost_byaddr(const struct irc_ssaddr *, struct DNSQuery *); |
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extern void add_local_domain(char *, size_t); |
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|
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#endif |
