ENH: Initial import

1 files changed, 255 insertions, 0 deletions

diff --git a/Utilities/cmcurl/hostip.h b/Utilities/cmcurl/hostip.h
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+#ifndef __HOSTIP_H
+#define __HOSTIP_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * $Id$
+ ***************************************************************************/
+
+#include "setup.h"
+#include "hash.h"
+
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+
+/*
+ * Setup comfortable CURLRES_* defines to use in the host*.c sources.
+ */
+
+#ifdef USE_ARES
+#define CURLRES_ASYNCH
+#define CURLRES_ARES
+#endif
+
+#ifdef USE_THREADING_GETHOSTBYNAME
+#define CURLRES_ASYNCH
+#define CURLRES_THREADED
+#endif
+
+#ifdef USE_THREADING_GETADDRINFO
+#define CURLRES_ASYNCH
+#define CURLRES_THREADED
+#endif
+
+#ifdef ENABLE_IPV6
+#define CURLRES_IPV6
+#else
+#define CURLRES_IPV4
+#endif
+
+#ifdef CURLRES_IPV4
+#if !defined(HAVE_GETHOSTBYNAME_R) || defined(CURLRES_ASYNCH)
+/* If built for ipv4 and missing gethostbyname_r(), or if using async name
+   resolve, we need the Curl_addrinfo_copy() function (which itself needs the
+   Curl_hostent_relocate() function)) */
+#define CURLRES_ADDRINFO_COPY
+#endif
+#endif /* IPv4-only */
+
+#ifndef CURLRES_ASYNCH
+#define CURLRES_SYNCH
+#endif
+
+#ifndef USE_LIBIDN
+#define CURLRES_IDN
+#endif
+
+/* Allocate enough memory to hold the full name information structs and
+ * everything. OSF1 is known to require at least 8872 bytes. The buffer
+ * required for storing all possible aliases and IP numbers is according to
+ * Stevens' Unix Network Programming 2nd edition, p. 304: 8192 bytes!
+ */
+#define CURL_HOSTENT_SIZE 9000
+
+#define CURL_TIMEOUT_RESOLVE 300 /* when using asynch methods, we allow this
+                                    many seconds for a name resolve */
+
+#ifdef CURLRES_ARES
+#define CURL_ASYNC_SUCCESS ARES_SUCCESS
+#else
+#define CURL_ASYNC_SUCCESS CURLE_OK
+#endif
+
+/*
+ * Curl_addrinfo MUST be used for all name resolved info.
+ */
+#ifdef CURLRES_IPV6
+typedef struct addrinfo Curl_addrinfo;
+#else
+/* OK, so some ipv4-only include tree probably have the addrinfo struct, but
+   to work even on those that don't, we provide our own look-alike! */
+struct Curl_addrinfo {
+  int     ai_flags;
+  int     ai_family;
+  int     ai_socktype;
+  int     ai_protocol;
+  size_t  ai_addrlen;
+  struct sockaddr *ai_addr;
+  char   *ai_canonname;
+  struct Curl_addrinfo *ai_next;
+};
+typedef struct Curl_addrinfo Curl_addrinfo;
+#endif
+
+struct addrinfo;
+struct SessionHandle;
+struct connectdata;
+
+void Curl_global_host_cache_init(void);
+void Curl_global_host_cache_dtor(void);
+curl_hash *Curl_global_host_cache_get(void);
+
+#define Curl_global_host_cache_use(__p) ((__p)->set.global_dns_cache)
+
+struct Curl_dns_entry {
+  Curl_addrinfo *addr;
+  time_t timestamp;
+  long inuse;      /* use-counter, make very sure you decrease this
+                      when you're done using the address you received */
+};
+
+/*
+ * Curl_resolv() returns an entry with the info for the specified host
+ * and port.
+ *
+ * The returned data *MUST* be "unlocked" with Curl_resolv_unlock() after
+ * use, or we'll leak memory!
+ */
+/* return codes */
+#define CURLRESOLV_ERROR    -1
+#define CURLRESOLV_RESOLVED  0
+#define CURLRESOLV_PENDING   1
+int Curl_resolv(struct connectdata *conn, char *hostname,
+                int port, struct Curl_dns_entry **dnsentry);
+
+/*
+ * Curl_ipvalid() checks what CURL_IPRESOLVE_* requirements that might've
+ * been set and returns TRUE if they are OK.
+ */
+bool Curl_ipvalid(struct SessionHandle *data);
+
+/*
+ * Curl_getaddrinfo() is the generic low-level name resolve API within this
+ * source file. There are several versions of this function - for different
+ * name resolve layers (selected at build-time). They all take this same set
+ * of arguments
+ */
+Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
+                                char *hostname,
+                                int port,
+                                int *waitp);
+
+CURLcode Curl_is_resolved(struct connectdata *conn,
+                          struct Curl_dns_entry **dns);
+CURLcode Curl_wait_for_resolv(struct connectdata *conn,
+                              struct Curl_dns_entry **dnsentry);
+
+/* Curl_fdset() is a generic function that exists in multiple versions
+   depending on what name resolve technology we've built to use. The function
+   is called from the curl_multi_fdset() function */
+CURLcode Curl_fdset(struct connectdata *conn,
+                    fd_set *read_fd_set,
+                    fd_set *write_fd_set,
+                    int *max_fdp);
+/* unlock a previously resolved dns entry */
+void Curl_resolv_unlock(struct SessionHandle *data, struct Curl_dns_entry *dns);
+
+/* for debugging purposes only: */
+void Curl_scan_cache_used(void *user, void *ptr);
+
+/* free name info */
+void Curl_freeaddrinfo(Curl_addrinfo *freeaddr);
+
+/* make a new dns cache and return the handle */
+curl_hash *Curl_mk_dnscache(void);
+
+/* prune old entries from the DNS cache */
+void Curl_hostcache_prune(struct SessionHandle *data);
+
+/* Return # of adresses in a Curl_addrinfo struct */
+int Curl_num_addresses (const Curl_addrinfo *addr);
+
+#ifdef CURLDEBUG
+void curl_dofreeaddrinfo(struct addrinfo *freethis,
+                         int line, const char *source);
+int curl_dogetaddrinfo(char *hostname, char *service,
+                       struct addrinfo *hints,
+                       struct addrinfo **result,
+                       int line, const char *source);
+int curl_dogetnameinfo(const struct sockaddr *sa, socklen_t salen,
+                       char *host, size_t hostlen,
+                       char *serv, size_t servlen, int flags,
+                       int line, const char *source);
+#endif
+
+/* This is the callback function that is used when we build with asynch
+   resolve, ipv4 */
+void Curl_addrinfo4_callback(void *arg,
+                            int status,
+                            struct hostent *hostent);
+/* This is the callback function that is used when we build with asynch
+   resolve, ipv6 */
+void Curl_addrinfo6_callback(void *arg,
+                            int status,
+                            struct addrinfo *ai);
+
+
+/* [ipv4 only] Creates a Curl_addrinfo struct from a numerical-only IP
+   address */
+Curl_addrinfo *Curl_ip2addr(in_addr_t num, char *hostname, int port);
+
+/* [ipv4 only] Curl_he2ai() converts a struct hostent to a Curl_addrinfo chain
+   and returns it */
+Curl_addrinfo *Curl_he2ai(struct hostent *, int port);
+
+/* relocate a hostent struct */
+void Curl_hostent_relocate(struct hostent *h, long offset);
+
+/* Clone a Curl_addrinfo struct, works protocol independently */
+Curl_addrinfo *Curl_addrinfo_copy(void *orig, int port);
+
+/*
+ * Curl_printable_address() returns a printable version of the 1st address
+ * given in the 'ip' argument. The result will be stored in the buf that is
+ * bufsize bytes big.
+ */
+const char *Curl_printable_address(const Curl_addrinfo *ip,
+                                   char *buf, size_t bufsize);
+
+/*
+ * Curl_cache_addr() stores a 'Curl_addrinfo' struct in the DNS cache.
+ *
+ * Returns the Curl_dns_entry entry pointer or NULL if the storage failed.
+ */
+struct Curl_dns_entry *
+Curl_cache_addr(struct SessionHandle *data, Curl_addrinfo *addr,
+                char *hostname, int port);
+
+#ifndef INADDR_NONE
+#define CURL_INADDR_NONE (in_addr_t) ~0
+#else
+#define CURL_INADDR_NONE INADDR_NONE
+#endif
+
+
+
+
+#endif