diff options
author | Daniel Stenberg <daniel@haxx.se> | 2010-03-24 10:34:30 +0100 |
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committer | Daniel Stenberg <daniel@haxx.se> | 2010-03-24 10:34:30 +0100 |
commit | 4259d2df7dd95637a4b1e3fb174fe5e5aef81069 (patch) | |
tree | 8abd5ab61fbacf160f9084a44613fcc4b20e8483 /ares/ares_private.h | |
parent | 4b351d018e3d6691191fd653a17f14f4a31e0b4c (diff) |
remove the ares subtree
c-ares is now hosted entirely separate from the curl project
see http://c-ares.haxx.se/ for all details concerning c-ares,
its source repository and more.
Diffstat (limited to 'ares/ares_private.h')
-rw-r--r-- | ares/ares_private.h | 345 |
1 files changed, 0 insertions, 345 deletions
diff --git a/ares/ares_private.h b/ares/ares_private.h deleted file mode 100644 index 2766d1916..000000000 --- a/ares/ares_private.h +++ /dev/null @@ -1,345 +0,0 @@ -#ifndef __ARES_PRIVATE_H -#define __ARES_PRIVATE_H - -/* $Id$ */ - -/* Copyright 1998 by the Massachusetts Institute of Technology. - * Copyright (C) 2004-2010 by Daniel Stenberg - * - * Permission to use, copy, modify, and distribute this - * software and its documentation for any purpose and without - * fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright - * notice and this permission notice appear in supporting - * documentation, and that the name of M.I.T. not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" - * without express or implied warranty. - */ - -/* - * Define WIN32 when build target is Win32 API - */ - -#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) -#define WIN32 -#endif - -#include <stdio.h> -#include <sys/types.h> - -#ifdef HAVE_NETINET_IN_H -#include <netinet/in.h> -#endif - -#ifdef WATT32 -#include <tcp.h> -#include <sys/ioctl.h> -#define writev(s,v,c) writev_s(s,v,c) -#define HAVE_WRITEV 1 -#endif - -#ifdef NETWARE -#include <time.h> -#endif - -#define DEFAULT_TIMEOUT 5000 /* milliseconds */ -#define DEFAULT_TRIES 4 -#ifndef INADDR_NONE -#define INADDR_NONE 0xffffffff -#endif - -#if defined(WIN32) && !defined(WATT32) - -#define IS_NT() ((int)GetVersion() > 0) -#define WIN_NS_9X "System\\CurrentControlSet\\Services\\VxD\\MSTCP" -#define WIN_NS_NT_KEY "System\\CurrentControlSet\\Services\\Tcpip\\Parameters" -#define NAMESERVER "NameServer" -#define DHCPNAMESERVER "DhcpNameServer" -#define DATABASEPATH "DatabasePath" -#define WIN_PATH_HOSTS "\\hosts" - -#elif defined(WATT32) - -#define PATH_RESOLV_CONF "/dev/ENV/etc/resolv.conf" - -#elif defined(NETWARE) - -#define PATH_RESOLV_CONF "sys:/etc/resolv.cfg" -#define PATH_HOSTS "sys:/etc/hosts" - -#elif defined(__riscos__) - -#define PATH_HOSTS "InetDBase:Hosts" - -#else - -#define PATH_RESOLV_CONF "/etc/resolv.conf" -#ifdef ETC_INET -#define PATH_HOSTS "/etc/inet/hosts" -#else -#define PATH_HOSTS "/etc/hosts" -#endif - -#endif - -#define ARES_ID_KEY_LEN 31 - -#include "ares_ipv6.h" -#include "ares_llist.h" - -#ifndef HAVE_STRDUP -# include "ares_strdup.h" -# define strdup(ptr) ares_strdup(ptr) -#endif - -#ifndef HAVE_STRCASECMP -# include "ares_strcasecmp.h" -# define strcasecmp(p1,p2) ares_strcasecmp(p1,p2) -#endif - -#ifndef HAVE_STRNCASECMP -# include "ares_strcasecmp.h" -# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n) -#endif - -#ifndef HAVE_WRITEV -# include "ares_writev.h" -# define writev(s,ptr,cnt) ares_writev(s,ptr,cnt) -#endif - -struct ares_addr { - int family; - union { - struct in_addr addr4; - struct ares_in6_addr addr6; - } addr; -}; -#define addrV4 addr.addr4 -#define addrV6 addr.addr6 - -struct query; - -struct send_request { - /* Remaining data to send */ - const unsigned char *data; - size_t len; - - /* The query for which we're sending this data */ - struct query* owner_query; - /* The buffer we're using, if we have our own copy of the packet */ - unsigned char *data_storage; - - /* Next request in queue */ - struct send_request *next; -}; - -struct server_state { - struct ares_addr addr; - ares_socket_t udp_socket; - ares_socket_t tcp_socket; - - /* Mini-buffer for reading the length word */ - unsigned char tcp_lenbuf[2]; - int tcp_lenbuf_pos; - int tcp_length; - - /* Buffer for reading actual TCP data */ - unsigned char *tcp_buffer; - int tcp_buffer_pos; - - /* TCP output queue */ - struct send_request *qhead; - struct send_request *qtail; - - /* Which incarnation of this connection is this? We don't want to - * retransmit requests into the very same socket, but if the server - * closes on us and we re-open the connection, then we do want to - * re-send. */ - int tcp_connection_generation; - - /* Circular, doubly-linked list of outstanding queries to this server */ - struct list_node queries_to_server; - - /* Link back to owning channel */ - ares_channel channel; - - /* Is this server broken? We mark connections as broken when a - * request that is queued for sending times out. - */ - int is_broken; -}; - -/* State to represent a DNS query */ -struct query { - /* Query ID from qbuf, for faster lookup, and current timeout */ - unsigned short qid; - struct timeval timeout; - - /* - * Links for the doubly-linked lists in which we insert a query. - * These circular, doubly-linked lists that are hash-bucketed based - * the attributes we care about, help making most important - * operations O(1). - */ - struct list_node queries_by_qid; /* hopefully in same cache line as qid */ - struct list_node queries_by_timeout; - struct list_node queries_to_server; - struct list_node all_queries; - - /* Query buf with length at beginning, for TCP transmission */ - unsigned char *tcpbuf; - int tcplen; - - /* Arguments passed to ares_send() (qbuf points into tcpbuf) */ - const unsigned char *qbuf; - int qlen; - ares_callback callback; - void *arg; - - /* Query status */ - int try; /* Number of times we tried this query already. */ - int server; /* Server this query has last been sent to. */ - struct query_server_info *server_info; /* per-server state */ - int using_tcp; - int error_status; - int timeouts; /* number of timeouts we saw for this request */ -}; - -/* Per-server state for a query */ -struct query_server_info { - int skip_server; /* should we skip server, due to errors, etc? */ - int tcp_connection_generation; /* into which TCP connection did we send? */ -}; - -/* An IP address pattern; matches an IP address X if X & mask == addr */ -#define PATTERN_MASK 0x1 -#define PATTERN_CIDR 0x2 - -struct apattern { - union - { - struct in_addr addr4; - struct ares_in6_addr addr6; - } addr; - union - { - struct in_addr addr4; - struct ares_in6_addr addr6; - unsigned short bits; - } mask; - int family; - unsigned short type; -}; - -typedef struct rc4_key -{ - unsigned char state[256]; - unsigned char x; - unsigned char y; -} rc4_key; - -struct ares_channeldata { - /* Configuration data */ - int flags; - int timeout; /* in milliseconds */ - int tries; - int ndots; - int rotate; /* if true, all servers specified are used */ - int udp_port; - int tcp_port; - int socket_send_buffer_size; - int socket_receive_buffer_size; - char **domains; - int ndomains; - struct apattern *sortlist; - int nsort; - char *lookups; - - int optmask; /* the option bitfield passed in at init time */ - - /* Server addresses and communications state */ - struct server_state *servers; - int nservers; - - /* ID to use for next query */ - unsigned short next_id; - /* key to use when generating new ids */ - rc4_key id_key; - - /* Generation number to use for the next TCP socket open/close */ - int tcp_connection_generation; - - /* The time at which we last called process_timeouts(). Uses integer seconds - just to draw the line somewhere. */ - time_t last_timeout_processed; - - /* Last server we sent a query to. */ - int last_server; - - /* Circular, doubly-linked list of queries, bucketed various ways.... */ - /* All active queries in a single list: */ - struct list_node all_queries; - /* Queries bucketed by qid, for quickly dispatching DNS responses: */ -#define ARES_QID_TABLE_SIZE 2048 - struct list_node queries_by_qid[ARES_QID_TABLE_SIZE]; - /* Queries bucketed by timeout, for quickly handling timeouts: */ -#define ARES_TIMEOUT_TABLE_SIZE 1024 - struct list_node queries_by_timeout[ARES_TIMEOUT_TABLE_SIZE]; - - ares_sock_state_cb sock_state_cb; - void *sock_state_cb_data; - - ares_sock_create_callback sock_create_cb; - void *sock_create_cb_data; -}; - -/* return true if now is exactly check time or later */ -int ares__timedout(struct timeval *now, - struct timeval *check); -/* add the specific number of milliseconds to the time in the first argument */ -int ares__timeadd(struct timeval *now, - int millisecs); -/* return time offset between now and (future) check, in milliseconds */ -long ares__timeoffset(struct timeval *now, - struct timeval *check); -/* returns ARES_SUCCESS if library has been initialized */ -int ares_library_initialized(void); -void ares__rc4(rc4_key* key,unsigned char *buffer_ptr, int buffer_len); -void ares__send_query(ares_channel channel, struct query *query, - struct timeval *now); -void ares__close_sockets(ares_channel channel, struct server_state *server); -int ares__get_hostent(FILE *fp, int family, struct hostent **host); -int ares__read_line(FILE *fp, char **buf, size_t *bufsize); -void ares__free_query(struct query *query); -unsigned short ares__generate_new_id(rc4_key* key); -struct timeval ares__tvnow(void); -int ares__expand_name_for_response(const unsigned char *encoded, - const unsigned char *abuf, int alen, - char **s, long *enclen); -void ares__init_servers_state(ares_channel channel); -void ares__destroy_servers_state(ares_channel channel); -#if 0 /* Not used */ -long ares__tvdiff(struct timeval t1, struct timeval t2); -#endif - -#define ARES_SWAP_BYTE(a,b) \ - { unsigned char swapByte = *(a); *(a) = *(b); *(b) = swapByte; } - -#define SOCK_STATE_CALLBACK(c, s, r, w) \ - do { \ - if ((c)->sock_state_cb) \ - (c)->sock_state_cb((c)->sock_state_cb_data, (s), (r), (w)); \ - } while (0) - -#ifdef CURLDEBUG -/* This is low-level hard-hacking memory leak tracking and similar. Using the - libcurl lowlevel code from within library is ugly and only works when - c-ares is built and linked with a similarly curldebug-enabled libcurl, - but we do this anyway for convenience. */ -#include "../lib/memdebug.h" -#endif - -#endif /* __ARES_PRIVATE_H */ |