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authorDaniel Stenberg <daniel@haxx.se>2003-10-07 21:54:04 +0000
committerDaniel Stenberg <daniel@haxx.se>2003-10-07 21:54:04 +0000
commit0436fbe226ca8ea71a751f4a86a228632e5cbc63 (patch)
tree5cf6478e89608a8000bd36014ba4032bcc9c0528 /ares/ares_private.h
parent6494889e3ba6b1432258f0a8ed402723607cff21 (diff)
downloadcurl-0436fbe226ca8ea71a751f4a86a228632e5cbc63.tar.gz
ares 1.1.1 with collected applied patches
Diffstat (limited to 'ares/ares_private.h')
-rw-r--r--ares/ares_private.h145
1 files changed, 145 insertions, 0 deletions
diff --git a/ares/ares_private.h b/ares/ares_private.h
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+/* $Id$ */
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+#include <sys/types.h>
+
+#ifdef WIN32
+
+#else
+#include <netinet/in.h>
+/* We define closesocket() here so that we can use this function all over
+ the source code for closing sockets. */
+#define closesocket(x) close(x)
+#endif
+
+#define DEFAULT_TIMEOUT 5
+#define DEFAULT_TRIES 4
+#ifndef INADDR_NONE
+#define INADDR_NONE 0xffffffff
+#endif
+
+#ifdef WIN32
+
+#define IsNT ((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 PATH_HOSTS_NT "\\drivers\\etc\\hosts"
+#define PATH_HOSTS_9X "\\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
+
+struct send_request {
+ /* Remaining data to send */
+ const char *data;
+ int len;
+
+ /* Next request in queue */
+ struct send_request *next;
+};
+
+struct server_state {
+ struct in_addr addr;
+ int udp_socket;
+ int 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;
+};
+
+struct query {
+ /* Query ID from qbuf, for faster lookup, and current timeout */
+ unsigned short qid;
+ time_t timeout;
+
+ /* Query buf with length at beginning, for TCP transmission */
+ char *tcpbuf;
+ int tcplen;
+
+ /* Arguments passed to ares_send() (qbuf points into tcpbuf) */
+ const char *qbuf;
+ int qlen;
+ ares_callback callback;
+ void *arg;
+
+ /* Query status */
+ int try;
+ int server;
+ int *skip_server;
+ int using_tcp;
+ int error_status;
+
+ /* Next query in chain */
+ struct query *next;
+};
+
+/* An IP address pattern; matches an IP address X if X & mask == addr */
+struct apattern {
+ struct in_addr addr;
+ struct in_addr mask;
+};
+
+struct ares_channeldata {
+ /* Configuration data */
+ int flags;
+ int timeout;
+ int tries;
+ int ndots;
+ int udp_port;
+ int tcp_port;
+ char **domains;
+ int ndomains;
+ struct apattern *sortlist;
+ int nsort;
+ char *lookups;
+
+ /* Server addresses and communications state */
+ struct server_state *servers;
+ int nservers;
+
+ /* ID to use for next query */
+ unsigned short next_id;
+
+ /* Active queries */
+ struct query *queries;
+};
+
+void ares__send_query(ares_channel channel, struct query *query, time_t now);
+void ares__close_sockets(struct server_state *server);
+int ares__get_hostent(FILE *fp, struct hostent **host);
+int ares__read_line(FILE *fp, char **buf, int *bufsize);