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-rw-r--r--lib/hostthre.c579
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diff --git a/lib/hostthre.c b/lib/hostthre.c
deleted file mode 100644
index e8dfa540..00000000
--- a/lib/hostthre.c
+++ /dev/null
@@ -1,579 +0,0 @@
-/***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2010, 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.
- *
- ***************************************************************************/
-
-#include "setup.h"
-
-#include <string.h>
-#include <errno.h>
-
-#ifdef HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
-#ifdef HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-#ifdef HAVE_NETDB_H
-#include <netdb.h>
-#endif
-#ifdef HAVE_ARPA_INET_H
-#include <arpa/inet.h>
-#endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h> /* required for free() prototypes */
-#endif
-#ifdef HAVE_UNISTD_H
-#include <unistd.h> /* for the close() proto */
-#endif
-#ifdef __VMS
-#include <in.h>
-#include <inet.h>
-#include <stdlib.h>
-#endif
-
-#if defined(USE_THREADS_POSIX)
-# ifdef HAVE_PTHREAD_H
-# include <pthread.h>
-# endif
-#elif defined(USE_THREADS_WIN32)
-# ifdef HAVE_PROCESS_H
-# include <process.h>
-# endif
-#endif
-
-#if (defined(NETWARE) && defined(__NOVELL_LIBC__))
-#undef in_addr_t
-#define in_addr_t unsigned long
-#endif
-
-#include "urldata.h"
-#include "sendf.h"
-#include "hostip.h"
-#include "hash.h"
-#include "share.h"
-#include "strerror.h"
-#include "url.h"
-#include "multiif.h"
-#include "inet_pton.h"
-#include "inet_ntop.h"
-#include "curl_threads.h"
-
-#define _MPRINTF_REPLACE /* use our functions only */
-#include <curl/mprintf.h>
-
-#include "curl_memory.h"
-/* The last #include file should be: */
-#include "memdebug.h"
-
-/***********************************************************************
- * Only for threaded name resolves builds
- **********************************************************************/
-#ifdef CURLRES_THREADED
-
-/* This function is used to init a threaded resolve */
-static bool init_resolve_thread(struct connectdata *conn,
- const char *hostname, int port,
- const struct addrinfo *hints);
-
-
-/* Data for synchronization between resolver thread and its parent */
-struct thread_sync_data {
- curl_mutex_t * mtx;
- int done;
-
- char * hostname; /* hostname to resolve, Curl_async.hostname
- duplicate */
- int port;
- int sock_error;
- Curl_addrinfo *res;
-#ifdef HAVE_GETADDRINFO
- struct addrinfo hints;
-#endif
-};
-
-struct thread_data {
- curl_thread_t thread_hnd;
- curl_socket_t dummy_sock;
- unsigned int poll_interval;
- int interval_end;
- struct thread_sync_data tsd;
-};
-
-static struct thread_sync_data * conn_thread_sync_data(struct connectdata *conn)
-{
- return &(((struct thread_data *)conn->async.os_specific)->tsd);
-}
-
-#define CONN_THREAD_SYNC_DATA(conn) &(((conn)->async.os_specific)->tsd);
-
-/* Destroy resolver thread synchronization data */
-static
-void destroy_thread_sync_data(struct thread_sync_data * tsd)
-{
- if (tsd->mtx) {
- Curl_mutex_destroy(tsd->mtx);
- free(tsd->mtx);
- }
-
- if(tsd->hostname)
- free(tsd->hostname);
-
- if (tsd->res)
- Curl_freeaddrinfo(tsd->res);
-
- memset(tsd,0,sizeof(*tsd));
-}
-
-/* Initialize resolver thread synchronization data */
-static
-int init_thread_sync_data(struct thread_sync_data * tsd,
- const char * hostname,
- int port,
- const struct addrinfo *hints)
-{
- memset(tsd, 0, sizeof(*tsd));
-
- tsd->port = port;
-#ifdef CURLRES_IPV6
- DEBUGASSERT(hints);
- tsd->hints = *hints;
-#else
- (void) hints;
-#endif
-
- tsd->mtx = malloc(sizeof(curl_mutex_t));
- if (tsd->mtx == NULL) goto err_exit;
-
- Curl_mutex_init(tsd->mtx);
-
- tsd->sock_error = CURL_ASYNC_SUCCESS;
-
- /* Copying hostname string because original can be destroyed by parent
- * thread during gethostbyname execution.
- */
- tsd->hostname = strdup(hostname);
- if (!tsd->hostname) goto err_exit;
-
- return 1;
-
- err_exit:
- /* Memory allocation failed */
- destroy_thread_sync_data(tsd);
- return 0;
-}
-
-static int getaddrinfo_complete(struct connectdata *conn)
-{
- struct thread_sync_data *tsd = conn_thread_sync_data(conn);
- int rc;
-
- rc = Curl_addrinfo_callback(conn, tsd->sock_error, tsd->res);
- /* The tsd->res structure has been copied to async.dns and perhaps the DNS cache.
- Set our copy to NULL so destroy_thread_sync_data doesn't free it.
- */
- tsd->res = NULL;
-
- return rc;
-}
-
-
-#ifdef HAVE_GETADDRINFO
-
-/*
- * getaddrinfo_thread() resolves a name and then exits.
- *
- * For builds without ARES, but with ENABLE_IPV6, create a resolver thread
- * and wait on it.
- */
-static unsigned int CURL_STDCALL getaddrinfo_thread (void *arg)
-{
- struct thread_sync_data *tsd = (struct thread_sync_data*)arg;
- char service [NI_MAXSERV];
- int rc;
-
- snprintf(service, sizeof(service), "%d", tsd->port);
-
- rc = Curl_getaddrinfo_ex(tsd->hostname, service, &tsd->hints, &tsd->res);
-
- if (rc != 0) {
- tsd->sock_error = SOCKERRNO;
- if (tsd->sock_error == 0)
- tsd->sock_error = ENOMEM;
- }
-
- Curl_mutex_acquire(tsd->mtx);
- tsd->done = 1;
- Curl_mutex_release(tsd->mtx);
-
- return 0;
-}
-
-#else /* HAVE_GETADDRINFO */
-
-/*
- * gethostbyname_thread() resolves a name and then exits.
- */
-static unsigned int CURL_STDCALL gethostbyname_thread (void *arg)
-{
- struct thread_sync_data *tsd = (struct thread_sync_data *)arg;
-
- tsd->res = Curl_ipv4_resolve_r(tsd->hostname, tsd->port);
-
- if (!tsd->res) {
- tsd->sock_error = SOCKERRNO;
- if (tsd->sock_error == 0)
- tsd->sock_error = ENOMEM;
- }
-
- Curl_mutex_acquire(tsd->mtx);
- tsd->done = 1;
- Curl_mutex_release(tsd->mtx);
-
- return 0;
-}
-
-#endif /* HAVE_GETADDRINFO */
-
-/*
- * Curl_destroy_thread_data() cleans up async resolver data and thread handle.
- * Complementary of ares_destroy.
- */
-void Curl_destroy_thread_data (struct Curl_async *async)
-{
- if(async->hostname)
- free(async->hostname);
-
- if(async->os_specific) {
- struct thread_data *td = (struct thread_data*) async->os_specific;
-
- if (td->dummy_sock != CURL_SOCKET_BAD)
- sclose(td->dummy_sock);
-
- if (td->thread_hnd != curl_thread_t_null)
- Curl_thread_join(&td->thread_hnd);
-
- destroy_thread_sync_data(&td->tsd);
-
- free(async->os_specific);
- }
- async->hostname = NULL;
- async->os_specific = NULL;
-}
-
-/*
- * init_resolve_thread() starts a new thread that performs the actual
- * resolve. This function returns before the resolve is done.
- *
- * Returns FALSE in case of failure, otherwise TRUE.
- */
-static bool init_resolve_thread (struct connectdata *conn,
- const char *hostname, int port,
- const struct addrinfo *hints)
-{
- struct thread_data *td = calloc(1, sizeof(struct thread_data));
- int err = ENOMEM;
-
- conn->async.os_specific = (void*) td;
- if(!td)
- goto err_exit;
-
- conn->async.port = port;
- conn->async.done = FALSE;
- conn->async.status = 0;
- conn->async.dns = NULL;
- td->dummy_sock = CURL_SOCKET_BAD;
- td->thread_hnd = curl_thread_t_null;
-
- if (!init_thread_sync_data(&td->tsd, hostname, port, hints))
- goto err_exit;
-
- Curl_safefree(conn->async.hostname);
- conn->async.hostname = strdup(hostname);
- if(!conn->async.hostname)
- goto err_exit;
-
-#ifdef WIN32
- /* This socket is only to keep Curl_resolv_fdset() and select() happy;
- * should never become signalled for read since it's unbound but
- * Windows needs at least 1 socket in select().
- */
- td->dummy_sock = socket(AF_INET, SOCK_DGRAM, 0);
- if (td->dummy_sock == CURL_SOCKET_BAD)
- goto err_exit;
-#endif
-
-#ifdef HAVE_GETADDRINFO
- td->thread_hnd = Curl_thread_create(getaddrinfo_thread, &td->tsd);
-#else
- td->thread_hnd = Curl_thread_create(gethostbyname_thread, &td->tsd);
-#endif
-
- if(!td->thread_hnd) {
-#ifndef _WIN32_WCE
- err = errno;
-#endif
- goto err_exit;
- }
-
- return TRUE;
-
- err_exit:
- Curl_destroy_thread_data(&conn->async);
-
- SET_ERRNO(err);
-
- return FALSE;
-}
-
-
-/*
- * Curl_wait_for_resolv() waits for a resolve to finish. This function should
- * be avoided since using this risk getting the multi interface to "hang".
- *
- * If 'entry' is non-NULL, make it point to the resolved dns entry
- *
- * This is the version for resolves-in-a-thread.
- */
-CURLcode Curl_wait_for_resolv(struct connectdata *conn,
- struct Curl_dns_entry **entry)
-{
- struct thread_data *td = (struct thread_data*) conn->async.os_specific;
- struct SessionHandle *data = conn->data;
- CURLcode rc = CURLE_OK;
-
- DEBUGASSERT(conn && td);
-
- /* wait for the thread to resolve the name */
- if (Curl_thread_join(&td->thread_hnd)) {
- rc = getaddrinfo_complete(conn);
- } else {
- DEBUGASSERT(0);
- }
-
- conn->async.done = TRUE;
-
- if(entry)
- *entry = conn->async.dns;
-
- if(!conn->async.dns) {
- /* a name was not resolved */
- if (conn->bits.httpproxy) {
- failf(data, "Could not resolve proxy: %s; %s",
- conn->async.hostname, Curl_strerror(conn, conn->async.status));
- rc = CURLE_COULDNT_RESOLVE_PROXY;
- } else {
- failf(data, "Could not resolve host: %s; %s",
- conn->async.hostname, Curl_strerror(conn, conn->async.status));
- rc = CURLE_COULDNT_RESOLVE_HOST;
- }
- }
-
- Curl_destroy_thread_data(&conn->async);
-
- if(!conn->async.dns)
- conn->bits.close = TRUE;
-
- return (rc);
-}
-
-/*
- * Curl_is_resolved() is called repeatedly to check if a previous name resolve
- * request has completed. It should also make sure to time-out if the
- * operation seems to take too long.
- */
-CURLcode Curl_is_resolved(struct connectdata *conn,
- struct Curl_dns_entry **entry)
-{
- struct SessionHandle *data = conn->data;
- struct thread_data *td = (struct thread_data*) conn->async.os_specific;
- int done = 0;
-
- *entry = NULL;
-
- if (!td) {
- DEBUGASSERT(td);
- return CURLE_COULDNT_RESOLVE_HOST;
- }
-
- Curl_mutex_acquire(td->tsd.mtx);
- done = td->tsd.done;
- Curl_mutex_release(td->tsd.mtx);
-
- if (done) {
- getaddrinfo_complete(conn);
- Curl_destroy_thread_data(&conn->async);
-
- if(!conn->async.dns) {
- failf(data, "Could not resolve host: %s; %s",
- conn->host.name, Curl_strerror(conn, conn->async.status));
- return CURLE_COULDNT_RESOLVE_HOST;
- }
- *entry = conn->async.dns;
- } else {
- /* poll for name lookup done with exponential backoff up to 250ms */
- int elapsed = Curl_tvdiff(Curl_tvnow(), data->progress.t_startsingle);
- if (elapsed < 0)
- elapsed = 0;
-
- if (td->poll_interval == 0)
- /* Start at 1ms poll interval */
- td->poll_interval = 1;
- else if (elapsed >= td->interval_end)
- /* Back-off exponentially if last interval expired */
- td->poll_interval *= 2;
-
- if (td->poll_interval > 250)
- td->poll_interval = 250;
-
- td->interval_end = elapsed + td->poll_interval;
- Curl_expire(conn->data, td->poll_interval);
- }
-
- return CURLE_OK;
-}
-
-int Curl_resolv_getsock(struct connectdata *conn,
- curl_socket_t *socks,
- int numsocks)
-{
- const struct thread_data *td =
- (const struct thread_data *) conn->async.os_specific;
-
- if(td && td->dummy_sock != CURL_SOCKET_BAD) {
- if(numsocks) {
- /* return one socket waiting for readable, even though this is just
- a dummy */
- socks[0] = td->dummy_sock;
- return GETSOCK_READSOCK(0);
- }
- }
- return 0;
-}
-
-#ifndef HAVE_GETADDRINFO
-/*
- * Curl_getaddrinfo() - for platforms without getaddrinfo
- */
-Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
- const char *hostname,
- int port,
- int *waitp)
-{
- struct in_addr in;
-
- *waitp = 0; /* default to synchronous response */
-
- if(Curl_inet_pton(AF_INET, hostname, &in) > 0)
- /* This is a dotted IP address 123.123.123.123-style */
- return Curl_ip2addr(AF_INET, &in, hostname, port);
-
- /* fire up a new resolver thread! */
- if(init_resolve_thread(conn, hostname, port, NULL)) {
- *waitp = 1; /* expect asynchronous response */
- return NULL;
- }
-
- /* fall-back to blocking version */
- return Curl_ipv4_resolve_r(hostname, port);
-}
-
-#else /* !HAVE_GETADDRINFO */
-
-/*
- * Curl_getaddrinfo() - for getaddrinfo
- */
-Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
- const char *hostname,
- int port,
- int *waitp)
-{
- struct addrinfo hints;
- Curl_addrinfo *res;
- int error;
- char sbuf[NI_MAXSERV];
- int pf = PF_INET;
- struct SessionHandle *data = conn->data;
-
- *waitp = 0; /* default to synchronous response */
-
-#ifndef CURLRES_IPV4
- /*
- * Check if a limited name resolve has been requested.
- */
- switch(data->set.ip_version) {
- case CURL_IPRESOLVE_V4:
- pf = PF_INET;
- break;
- case CURL_IPRESOLVE_V6:
- pf = PF_INET6;
- break;
- default:
- pf = PF_UNSPEC;
- break;
- }
-
- if (pf != PF_INET) {
- /* see if we have an IPv6 stack */
- curl_socket_t s = socket(PF_INET6, SOCK_DGRAM, 0);
- if(s == CURL_SOCKET_BAD) {
- /* Some non-IPv6 stacks have been found to make very slow name resolves
- * when PF_UNSPEC is used, so thus we switch to a mere PF_INET lookup if
- * the stack seems to be a non-ipv6 one. */
-
- pf = PF_INET;
- }
- else {
- /* This seems to be an IPv6-capable stack, use PF_UNSPEC for the widest
- * possible checks. And close the socket again.
- */
- sclose(s);
- }
- }
-#endif /* !CURLRES_IPV4 */
-
- memset(&hints, 0, sizeof(hints));
- hints.ai_family = pf;
- hints.ai_socktype = conn->socktype;
-
- snprintf(sbuf, sizeof(sbuf), "%d", port);
-
- /* fire up a new resolver thread! */
- if(init_resolve_thread(conn, hostname, port, &hints)) {
- *waitp = 1; /* expect asynchronous response */
- return NULL;
- }
-
- /* fall-back to blocking version */
- infof(data, "init_resolve_thread() failed for %s; %s\n",
- hostname, Curl_strerror(conn, ERRNO));
-
- error = Curl_getaddrinfo_ex(hostname, sbuf, &hints, &res);
- if(error) {
- infof(data, "getaddrinfo() failed for %s:%d; %s\n",
- hostname, port, Curl_strerror(conn, SOCKERRNO));
- return NULL;
- }
- return res;
-}
-
-#endif /* !HAVE_GETADDRINFO */
-
-#endif /* CURLRES_THREADED */