net.h
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1 /*
2  * net.h
3  *
4  * DNS Resolver definitions
5  *
6  * a Net::DNS like library for C
7  *
8  * (c) NLnet Labs, 2005-2006
9  *
10  * See the file LICENSE for the license
11  */
12 
13 #ifndef LDNS_NET_H
14 #define LDNS_NET_H
15 
16 #include <ldns/ldns.h>
17 #include <sys/socket.h>
18 
19 #ifdef __cplusplus
20 extern "C" {
21 #endif
22 
23 #define LDNS_DEFAULT_TIMEOUT_SEC 5
24 #define LDNS_DEFAULT_TIMEOUT_USEC 0
25 
42 ldns_status ldns_udp_send(uint8_t **result, ldns_buffer *qbin, const struct sockaddr_storage *to, socklen_t tolen, struct timeval timeout, size_t *answersize);
43 
54 int ldns_udp_bgsend(ldns_buffer *qbin, const struct sockaddr_storage *to, socklen_t tolen, struct timeval timeout);
55 
65 int ldns_tcp_bgsend(ldns_buffer *qbin, const struct sockaddr_storage *to, socklen_t tolen, struct timeval timeout);
66 
78 ldns_status ldns_tcp_send(uint8_t **result, ldns_buffer *qbin, const struct sockaddr_storage *to, socklen_t tolen, struct timeval timeout, size_t *answersize);
79 
89 ldns_status ldns_send(ldns_pkt **pkt, ldns_resolver *r, const ldns_pkt *query_pkt);
90 
102 
110 int ldns_tcp_connect(const struct sockaddr_storage *to, socklen_t tolen, struct timeval timeout);
111 
118 int ldns_udp_connect(const struct sockaddr_storage *to, struct timeval timeout);
119 
129 ssize_t ldns_tcp_send_query(ldns_buffer *qbin, int sockfd, const struct sockaddr_storage *to, socklen_t tolen);
130 
140 ssize_t ldns_udp_send_query(ldns_buffer *qbin, int sockfd, const struct sockaddr_storage *to, socklen_t tolen);
141 
151 uint8_t *ldns_tcp_read_wire_timeout(int sockfd, size_t *size, struct timeval timeout);
152 
162 uint8_t *ldns_tcp_read_wire(int sockfd, size_t *size);
163 
174 uint8_t *ldns_udp_read_wire(int sockfd, size_t *size, struct sockaddr_storage *fr, socklen_t *frlen);
175 
184 struct sockaddr_storage * ldns_rdf2native_sockaddr_storage(const ldns_rdf *rd, uint16_t port, size_t *size);
185 
192 ldns_rdf * ldns_sockaddr_storage2rdf(struct sockaddr_storage *sock, uint16_t *port);
193 
203 
204 #ifdef __cplusplus
205 }
206 #endif
207 
208 #endif /* LDNS_NET_H */
implementation of buffers to ease operations
Definition: buffer.h:50
DNS stub resolver structure.
Definition: resolver.h:59
enum ldns_enum_rr_class ldns_rr_class
Definition: rr.h:64
return sockfd
Definition: net.c:372
int ldns_tcp_bgsend(ldns_buffer *qbin, const struct sockaddr_storage *to, socklen_t tolen, struct timeval timeout)
Send an tcp query and don&#39;t wait for an answer but return the socket.
Definition: net.c:684
ssize_t ldns_udp_send_query(ldns_buffer *qbin, int sockfd, const struct sockaddr_storage *to, socklen_t tolen)
send a query via udp to a server.
Definition: net.c:491
ldns_status ldns_send(ldns_pkt **result_packet, ldns_resolver *r, const ldns_pkt *query_pkt)
Sends ptk to the nameserver at the resolver object.
Definition: net.c:35
Including this file will include all ldns files, and define some lookup tables.
ldns_status ldns_send_buffer(ldns_pkt **result, ldns_resolver *r, ldns_buffer *qb, ldns_rdf *tsig_mac)
Sends and ldns_buffer (presumably containing a packet to the nameserver at the resolver object...
Definition: net.c:60
ldns_rdf * ldns_sockaddr_storage2rdf(struct sockaddr_storage *sock, uint16_t *port)
returns an rdf with the sockaddr info.
Definition: net.c:752
int ldns_udp_connect(const struct sockaddr_storage *to, struct timeval timeout)
Create a udp socket to the specified address.
uint8_t * ldns_tcp_read_wire_timeout(int sockfd, size_t *size, struct timeval timeout)
Gives back a raw packet from the wire and reads the header data from the given socket.
Definition: net.c:539
DNS packet.
Definition: packet.h:233
int ldns_udp_bgsend(ldns_buffer *qbin, const struct sockaddr_storage *to, socklen_t tolen, struct timeval timeout)
Send an udp query and don&#39;t wait for an answer but return the socket.
Definition: net.c:338
uint8_t * ldns_tcp_read_wire(int sockfd, size_t *size)
This routine may block.
Definition: net.c:598
ssize_t ldns_tcp_send_query(ldns_buffer *qbin, int sockfd, const struct sockaddr_storage *to, socklen_t tolen)
send a query via tcp to a server.
Definition: net.c:466
enum ldns_enum_status ldns_status
Definition: error.h:122
int ldns_tcp_connect(const struct sockaddr_storage *to, socklen_t tolen, struct timeval timeout)
Create a tcp socket to the specified address.
Definition: net.c:376
Resource record data field.
Definition: rdata.h:138
struct sockaddr_storage * ldns_rdf2native_sockaddr_storage(const ldns_rdf *rd, uint16_t port, size_t *size)
returns the native sockaddr representation from the rdf.
Definition: net.c:709
ldns_status ldns_tcp_send(uint8_t **result, ldns_buffer *qbin, const struct sockaddr_storage *to, socklen_t tolen, struct timeval timeout, size_t *answer_size)
Sends a buffer to an ip using tcp and return the respons as a ldns_pkt.
Definition: net.c:650
ldns_status ldns_axfr_start(ldns_resolver *resolver, ldns_rdf *domain, ldns_rr_class class)
Prepares the resolver for an axfr query The query is sent and the answers can be read with ldns_axfr_...
Definition: net.c:787
ldns_status ldns_udp_send(uint8_t **result, ldns_buffer *qbin, const struct sockaddr_storage *to, socklen_t tolen, struct timeval timeout, size_t *answer_size)
Sends a buffer to an ip using udp and return the respons as a ldns_pkt.
Definition: net.c:294
uint8_t * ldns_udp_read_wire(int sockfd, size_t *size, struct sockaddr_storage *from, socklen_t *fromlen)
Gives back a raw packet from the wire and reads the header data from the given socket.
Definition: net.c:509