diff options
Diffstat (limited to 'rfc1035/rfc1035.h')
| -rw-r--r-- | rfc1035/rfc1035.h | 98 |
1 files changed, 87 insertions, 11 deletions
diff --git a/rfc1035/rfc1035.h b/rfc1035/rfc1035.h index 7b9c4e7..9a92c1b 100644 --- a/rfc1035/rfc1035.h +++ b/rfc1035/rfc1035.h @@ -228,6 +228,22 @@ int rfc1035_resolve_cname( #define RFC1035_X_RANDOMIZE 1 /* Randomize query results */ +/* +** rfc1035_resolve_cname_multiple is a version of rfc1035_resolve_cname +** that accepts an array of qtypes, and issues a query for each qtype. +** +** qtypes points to a 0-terminated list of RRs. +*/ +int rfc1035_resolve_cname_multiple(struct rfc1035_res *res, + char *namebuf, + /* RFC1035_MAXNAMESIZE buffer with + ** the name to query */ + unsigned char *qtypes, + unsigned qclass, + struct rfc1035_reply **ptr, + int x_flags); + + /* ** Always call replyfree when done. */ @@ -363,17 +379,6 @@ int rfc1035_wait_query(int, /* File descriptor from rfc1035_open */ unsigned); /* Number of seconds to wait, use 0 for default */ /* Like reply, but we select for writing */ -char *rfc1035_recv_udp(int, /* File descriptor from rfc1035_open */ - const struct sockaddr *, int, - /* Expecting reply from this IP address */ - int *, /* * will be set to point to # of bytes received */ - const char *); /* Original query, used to validate id # */ - /* Returns ptr to dynamically allocated memory containing the reply, - ** or NULL if error. Errno will be set EAGAIN if we should try - ** again, because the message received was not in response - ** to the query. - */ - char *rfc1035_query_udp(struct rfc1035_res *, int, /* file descriptor */ const struct sockaddr *, int, /* Attempt number */ @@ -623,6 +628,77 @@ struct rfc1035_ifconf { struct rfc1035_ifconf *rfc1035_ifconf(int *errflag); void rfc1035_ifconf_free(struct rfc1035_ifconf *ifconf_list); +/* +** Outstanding UDP queries. +*/ + + /* common query buffer */ + +struct querybuf { + char qbuf[512]; + unsigned qbuflen; + } ; + +struct rfc1035_udp_query_response; + + /* How many queries, and the queries */ + +struct rfc1035_udp_query_responses { + int n_queries; + struct rfc1035_udp_query_response *queries; +}; + + /* Each query, and response already receives so far, if any. */ + +struct rfc1035_udp_query_response { + const char *query; + unsigned querylen; + char *response; + unsigned resplen; +}; + +/* +** Allocate a new rfc1035_udp_query_responses. +** Copies each query into the rfc1035_udp_query_response, each response is +** initialized to null. +*/ + +struct rfc1035_udp_query_responses * +rfc1035_udp_query_response_alloc(const char **queries, + const unsigned *querylens, + int n_queries); + +struct rfc1035_udp_query_responses * +rfc1035_udp_query_response_alloc_bis(struct querybuf *queries, + int n_queries); + +/* +** Send all queries via UDPs, wait for responses. +** +** Returns non-0 if all queries are received, 0 if not. EAGAIN indicates +** a timeout, and this can be called again with the same +** rfc1035_udp_query_responses object; this resends all queries for which +** no response was received, and this will wait for the remaining responses. +*/ +int rfc1035_udp_query_multi(struct rfc1035_res *res, + /* Socket: */ + int fd, + /* Where to send it to */ + const struct sockaddr *sin, int sin_len, + /* The queries */ + struct rfc1035_udp_query_responses *qr, + + /* How long to wait for responses, in seconds. */ + unsigned w); + +/* +** Deallocate rfc1035_udp_query_responses. Each non-NULL response pointer +** gets free()d. +*/ + +void rfc1035_udp_query_response_free(struct rfc1035_udp_query_responses *); + + #ifdef __cplusplus } #endif |