diff options
Diffstat (limited to 'lib/hostip.h')
| -rw-r--r-- | lib/hostip.h | 129 |
1 files changed, 80 insertions, 49 deletions
diff --git a/lib/hostip.h b/lib/hostip.h index 33e573cd..d5b44bc9 100644 --- a/lib/hostip.h +++ b/lib/hostip.h @@ -7,7 +7,7 @@ * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * - * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al. + * Copyright (C) 1998 - 2015, 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 @@ -22,9 +22,10 @@ * ***************************************************************************/ -#include "setup.h" +#include "curl_setup.h" #include "hash.h" #include "curl_addrinfo.h" +#include "asyn.h" #ifdef HAVE_SETJMP_H #include <setjmp.h> @@ -35,14 +36,6 @@ #define in_addr_t unsigned long #endif -/* - * Comfortable CURLRES_* definitions are included from setup.h - */ - -#ifdef USE_ARES -#include <ares_version.h> -#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 @@ -53,17 +46,7 @@ #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 -#if ARES_VERSION >= 0x010500 -/* c-ares 1.5.0 or later, the callback proto is modified */ -#define HAVE_CARES_CALLBACK_TIMEOUTS 1 -#endif -#else #define CURL_ASYNC_SUCCESS CURLE_OK -#define ares_cancel(x) do {} while(0) -#define ares_destroy(x) do {} while(0) -#endif struct addrinfo; struct hostent; @@ -82,11 +65,10 @@ void Curl_global_host_cache_dtor(void); struct Curl_dns_entry { Curl_addrinfo *addr; - /* timestamp == 0 -- entry not in hostcache - timestamp != 0 -- entry is in hostcache */ + /* timestamp == 0 -- CURLOPT_RESOLVE entry, doesn't timeout */ time_t timestamp; - long inuse; /* use-counter, make very sure you decrease this - when you're done using the address you received */ + /* use-counter, use Curl_resolv_unlock to release reference */ + long inuse; }; /* @@ -107,11 +89,21 @@ int Curl_resolv_timeout(struct connectdata *conn, const char *hostname, int port, struct Curl_dns_entry **dnsentry, long timeoutms); +#ifdef CURLRES_IPV6 +/* + * Curl_ipv6works() returns TRUE if IPv6 seems to work. + */ +bool Curl_ipv6works(void); +#else +#define Curl_ipv6works() FALSE +#endif + /* * 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); +bool Curl_ipvalid(struct connectdata *conn); + /* * Curl_getaddrinfo() is the generic low-level name resolve API within this @@ -124,20 +116,6 @@ Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn, 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_resolv_getsock() 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 multi_getsock() function. 'sock' is a pointer - to an array to hold the file descriptors, with 'numsock' being the size of - that array (in number of entries). This function is supposed to return - bitmask indicating what file descriptors (referring to array indexes in the - 'sock' array) to wait for, read/write. */ -int Curl_resolv_getsock(struct connectdata *conn, curl_socket_t *sock, - int numsocks); /* unlock a previously resolved dns entry */ void Curl_resolv_unlock(struct SessionHandle *data, @@ -146,8 +124,8 @@ void Curl_resolv_unlock(struct SessionHandle *data, /* for debugging purposes only: */ void Curl_scan_cache_used(void *user, void *ptr); -/* make a new dns cache and return the handle */ -struct curl_hash *Curl_mk_dnscache(void); +/* init a new dns cache and return success */ +int Curl_mk_dnscache(struct curl_hash *hash); /* prune old entries from the DNS cache */ void Curl_hostcache_prune(struct SessionHandle *data); @@ -167,11 +145,18 @@ int curl_dogetnameinfo(GETNAMEINFO_QUAL_ARG1 GETNAMEINFO_TYPE_ARG1 sa, /* IPv4 threadsafe resolve function used for synch and asynch builds */ Curl_addrinfo *Curl_ipv4_resolve_r(const char * hostname, int port); +CURLcode Curl_async_resolved(struct connectdata *conn, + bool *protocol_connect); + +#ifndef CURLRES_ASYNCH +#define Curl_async_resolved(x,y) CURLE_OK +#endif + /* * Curl_addrinfo_callback() is used when we build with any asynch specialty. * Handles end of async request processing. Inserts ai into hostcache when * status is CURL_ASYNC_SUCCESS. Twiddles fields in conn to indicate async - * request completed wether successfull or failed. + * request completed whether successful or failed. */ CURLcode Curl_addrinfo_callback(struct connectdata *conn, int status, @@ -186,6 +171,18 @@ const char *Curl_printable_address(const Curl_addrinfo *ip, char *buf, size_t bufsize); /* + * Curl_fetch_addr() fetches a 'Curl_dns_entry' already in the DNS cache. + * + * Returns the Curl_dns_entry entry pointer or NULL if not in the cache. + * + * The returned data *MUST* be "unlocked" with Curl_resolv_unlock() after + * use, or we'll leak memory! + */ +struct Curl_dns_entry * +Curl_fetch_addr(struct connectdata *conn, + const char *hostname, + int port); +/* * 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. @@ -194,13 +191,6 @@ struct Curl_dns_entry * Curl_cache_addr(struct SessionHandle *data, Curl_addrinfo *addr, const char *hostname, int port); -/* - * Curl_destroy_thread_data() cleans up async resolver data. - * Complementary of ares_destroy. - */ -struct Curl_async; /* forward-declaration */ -void Curl_destroy_thread_data(struct Curl_async *async); - #ifndef INADDR_NONE #define CURL_INADDR_NONE (in_addr_t) ~0 #else @@ -216,4 +206,45 @@ void Curl_destroy_thread_data(struct Curl_async *async); extern sigjmp_buf curl_jmpenv; #endif +/* + * Function provided by the resolver backend to set DNS servers to use. + */ +CURLcode Curl_set_dns_servers(struct SessionHandle *data, char *servers); + +/* + * Function provided by the resolver backend to set + * outgoing interface to use for DNS requests + */ +CURLcode Curl_set_dns_interface(struct SessionHandle *data, + const char *interf); + +/* + * Function provided by the resolver backend to set + * local IPv4 address to use as source address for DNS requests + */ +CURLcode Curl_set_dns_local_ip4(struct SessionHandle *data, + const char *local_ip4); + +/* + * Function provided by the resolver backend to set + * local IPv6 address to use as source address for DNS requests + */ +CURLcode Curl_set_dns_local_ip6(struct SessionHandle *data, + const char *local_ip6); + +/* + * Clean off entries from the cache + */ +void Curl_hostcache_clean(struct SessionHandle *data, struct curl_hash *hash); + +/* + * Destroy the hostcache of this handle. + */ +void Curl_hostcache_destroy(struct SessionHandle *data); + +/* + * Populate the cache with specified entries from CURLOPT_RESOLVE. + */ +CURLcode Curl_loadhostpairs(struct SessionHandle *data); + #endif /* HEADER_CURL_HOSTIP_H */ |