Malin
eaaa8f6a11
- Re-cloned zonemaster-ldns with --recurse-submodules so the bundled ldns C library source (including Changelog and configure.ac) is present - Added autoconf, automake, libtool to Dockerfile.backend ldns-build stage so libtoolize + autoreconf can generate ldns/configure during make Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
149 lines
3.3 KiB
C
149 lines
3.3 KiB
C
/*
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server.h masterdont server, serves IXFR, AXFR, SOA queries.
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*/
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#ifndef SERVER_H
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#define SERVER_H
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struct zones_t;
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/**
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* Socket that is being serviced by the server.
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*/
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struct socket_service {
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/* socket */
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int s;
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/* true if a tcp socket */
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int is_tcp;
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/* tcp state: listening, reading, or writing. */
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enum {svr_tcp_listen, svr_tcp_read, svr_tcp_write} tcp_state;
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/* bytes processed for tcp */
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size_t bytes_done;
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/* peer address */
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struct sockaddr_storage peer;
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socklen_t peerlen;
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/* buffer for input/output */
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ldns_buffer* buffer;
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/* rrs for the reply. If not null, these RRs are part of the answer. */
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ldns_rr_list* reply;
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/* next in linked list */
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struct socket_service* next;
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};
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struct server_info_t {
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/* zones */
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struct zones_t* zones;
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/* config */
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struct config_file* cfg;
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/* number of open tcp connections */
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int num_tcp;
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/* socket list */
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struct socket_service* sock_list;
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/* select data, max fd */
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int maxfd;
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/* fd sets to select on, copied from. */
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fd_set rset, wset, eset;
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};
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/**
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* start the server, give zones, configfile (already read)
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* and portnumber to bind.
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* returns true if it needs to reload, false for exit.
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*/
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int server_start(const char* config);
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/**
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* free service list
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*/
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void server_free(struct server_info_t* s);
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/**
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* create service sockets on specified port.
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*/
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void server_bind(struct server_info_t* sinfo, int port);
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/**
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* create servicing struct from addr. socket, bind, (listen).
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* NULL on error.
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*/
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struct socket_service* server_service_create(struct addrinfo *ai);
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/**
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* free the service, close the socket
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*/
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void server_service_free(struct socket_service* svr);
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/**
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* Perform a select and handle the events on the sockets.
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*/
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void server_handle_net(struct server_info_t *sinfo);
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/**
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* Handle read possible on serviced socket.
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* Sets delete to true if connection should be closed (for tcp).
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*/
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void handle_read(struct server_info_t *sinfo, struct socket_service* sv,
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int *del, struct zones_t* zones);
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/**
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* Handle write possible on serviced socket.
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* Sets delete to true if connection should be closed (for tcp).
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*/
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void handle_write(struct server_info_t *sinfo, struct socket_service* sv,
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int *del);
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/**
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* Handle tcp listen. Creates new socket service after accepting.
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*/
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void handle_listen(struct server_info_t *sinfo, struct socket_service* sv);
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/**
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* read tcp query from socket.
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* returns true when query is finished OK. del is true on error.
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*/
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int read_tcp_query(struct socket_service *sv, int* del);
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/**
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* read udp query from socket.
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* returns true when query is read OK.
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*/
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int read_udp_query(struct socket_service *sv);
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/**
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* process query.
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* First result packet is in the buffer.
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* More results can be found in the rrlist.
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* return false if query should be dropped (no reply).
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*/
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int process_query(struct socket_service* sv, struct zones_t* zones);
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/**
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* send udp answer back to sender.
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*/
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void send_udp_answer(struct socket_service* sv);
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/**
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* send (part of) tcp answer.
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* del is true when tcp should be closed up.
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*/
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void write_tcp_answer(struct socket_service* sv, int* del);
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/**
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* Dump RRs into the answer to get more reply. Makes new reply buffer.
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* reply becomes NULL when last buffer is filled.
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*/
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void fill_r_up(struct socket_service* sv);
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/**
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* Dumps RRs into the answer section of the pkt.
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*/
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void fill_r_up_pkt(struct socket_service* sv, ldns_pkt* in_here);
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#endif /* SERVER_H */
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