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Major hostip.c cleanup and split into multiple files and easier #ifdef

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usage.
This commit is contained in:
Daniel Stenberg 2004-04-26 07:20:11 +00:00
parent 1dbe60b8b7
commit 648e82f05d
17 changed files with 2400 additions and 1123 deletions
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3
lib/Makefile.am
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@ -93,7 +93,8 @@ libcurl_la_SOURCES = arpa_telnet.h file.c netrc.h timeval.c base64.c \
content_encoding.c content_encoding.h share.c share.h http_digest.c \
md5.c md5.h http_digest.h http_negotiate.c http_negotiate.h \
http_ntlm.c http_ntlm.h ca-bundle.h inet_pton.c inet_pton.h \
strtoofft.c strtoofft.h strerror.c strerror.h
strtoofft.c strtoofft.h strerror.c strerror.h hostares.c hostasyn.c \
hostip4.c hostip6.c hostsyn.c hostthre.c inet_ntop.c inet_ntop.h
noinst_HEADERS = setup.h transfer.h

298
lib/hostares.c Normal file
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@ -0,0 +1,298 @@
/***************************************************************************
* _ _ ____ _
* 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 <string.h>
#include <errno.h>
#define _REENTRANT
#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
#include <malloc.h>
#else
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#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
#endif
#ifdef HAVE_SETJMP_H
#include <setjmp.h>
#endif
#ifdef WIN32
#include <process.h>
#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"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
#include "inet_ntoa_r.h"
#endif
/* The last #include file should be: */
#ifdef CURLDEBUG
#include "memdebug.h"
#endif
/***********************************************************************
* Only for ares-enabled builds
**********************************************************************/
#ifdef CURLRES_ARES
/*
* Curl_fdset() is called when someone from the outside world (using
* curl_multi_fdset()) wants to get our fd_set setup and we're talking with
* ares. The caller must make sure that this function is only called when we
* have a working ares channel.
*
* Returns: CURLE_OK always!
*/
CURLcode Curl_fdset(struct connectdata *conn,
fd_set *read_fd_set,
fd_set *write_fd_set,
int *max_fdp)
{
int max = ares_fds(conn->data->state.areschannel,
read_fd_set, write_fd_set);
*max_fdp = max;
return CURLE_OK;
}
/*
* 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.
*
* Returns normal CURLcode errors.
*/
CURLcode Curl_is_resolved(struct connectdata *conn,
struct Curl_dns_entry **dns)
{
fd_set read_fds, write_fds;
struct timeval tv={0,0};
int count;
struct SessionHandle *data = conn->data;
int nfds;
FD_ZERO(&read_fds);
FD_ZERO(&write_fds);
nfds = ares_fds(data->state.areschannel, &read_fds, &write_fds);
count = select(nfds, &read_fds, &write_fds, NULL,
(struct timeval *)&tv);
/* Call ares_process() unconditonally here, even if we simply timed out
above, as otherwise the ares name resolve won't timeout! */
ares_process(data->state.areschannel, &read_fds, &write_fds);
*dns = NULL;
if(conn->async.done) {
/* we're done, kill the ares handle */
if(!conn->async.dns)
return CURLE_COULDNT_RESOLVE_HOST;
*dns = conn->async.dns;
}
return CURLE_OK;
}
/*
* 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
*
* Returns CURLE_COULDNT_RESOLVE_HOST if the host was not resolved, and
* CURLE_OPERATION_TIMEDOUT if a time-out occurred.
*/
CURLcode Curl_wait_for_resolv(struct connectdata *conn,
struct Curl_dns_entry **entry)
{
CURLcode rc=CURLE_OK;
struct SessionHandle *data = conn->data;
long timeout = CURL_TIMEOUT_RESOLVE; /* default name resolve timeout */
/* now, see if there's a connect timeout or a regular timeout to
use instead of the default one */
if(conn->data->set.connecttimeout)
timeout = conn->data->set.connecttimeout;
else if(conn->data->set.timeout)
timeout = conn->data->set.timeout;
/* We convert the number of seconds into number of milliseconds here: */
if(timeout < 2147483)
/* maximum amount of seconds that can be multiplied with 1000 and
still fit within 31 bits */
timeout *= 1000;
else
timeout = 0x7fffffff; /* ridiculous amount of time anyway */
/* Wait for the name resolve query to complete. */
while (1) {
int nfds=0;
fd_set read_fds, write_fds;
struct timeval *tvp, tv, store;
int count;
struct timeval now = Curl_tvnow();
long timediff;
store.tv_sec = (int)timeout/1000;
store.tv_usec = (timeout%1000)*1000;
FD_ZERO(&read_fds);
FD_ZERO(&write_fds);
nfds = ares_fds(data->state.areschannel, &read_fds, &write_fds);
if (nfds == 0)
/* no file descriptors means we're done waiting */
break;
tvp = ares_timeout(data->state.areschannel, &store, &tv);
count = select(nfds, &read_fds, &write_fds, NULL, tvp);
if (count < 0 && errno != EINVAL)
break;
ares_process(data->state.areschannel, &read_fds, &write_fds);
timediff = Curl_tvdiff(Curl_tvnow(), now); /* spent time */
timeout -= timediff?timediff:1; /* always deduct at least 1 */
if (timeout < 0) {
/* our timeout, so we cancel the ares operation */
ares_cancel(data->state.areschannel);
break;
}
}
/* Operation complete, if the lookup was successful we now have the entry
in the cache. */
if(entry)
*entry = conn->async.dns;
if(!conn->async.dns) {
/* a name was not resolved */
if((timeout < 0) || (conn->async.status == ARES_ETIMEOUT)) {
failf(data, "Resolving host timed out: %s", conn->hostname);
rc = CURLE_OPERATION_TIMEDOUT;
}
else if(conn->async.done) {
failf(data, "Could not resolve host: %s (%s)", conn->hostname,
ares_strerror(conn->async.status));
rc = CURLE_COULDNT_RESOLVE_HOST;
}
else
rc = CURLE_OPERATION_TIMEDOUT;
/* close the connection, since we can't return failure here without
cleaning up this connection properly */
Curl_disconnect(conn);
}
return rc;
}
/*
* Curl_getaddrinfo() - when using ares
*
* Returns name information about the given hostname and port number. If
* successful, the 'hostent' is returned and the forth argument will point to
* memory we need to free after use. That memory *MUST* be freed with
* Curl_freeaddrinfo(), nothing else.
*/
Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
char *hostname,
int port,
int *waitp)
{
char *bufp;
struct SessionHandle *data = conn->data;
in_addr_t in = inet_addr(hostname);
*waitp = FALSE;
if (in != CURL_INADDR_NONE)
/* This is a dotted IP address 123.123.123.123-style */
return Curl_ip2addr(in, hostname);
bufp = strdup(hostname);
if(bufp) {
Curl_safefree(conn->async.hostname);
conn->async.hostname = bufp;
conn->async.port = port;
conn->async.done = FALSE; /* not done */
conn->async.status = 0; /* clear */
conn->async.dns = NULL; /* clear */
/* areschannel is already setup in the Curl_open() function */
ares_gethostbyname(data->state.areschannel, hostname, PF_INET,
Curl_addrinfo_callback, conn);
*waitp = TRUE; /* please wait for the response */
}
return NULL; /* no struct yet */
}
#endif /* CURLRES_ARES */

152
lib/hostasyn.c Normal file
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@ -0,0 +1,152 @@
/***************************************************************************
* _ _ ____ _
* 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 <string.h>
#include <errno.h>
#define _REENTRANT
#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
#include <malloc.h>
#else
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#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
#endif
#ifdef HAVE_SETJMP_H
#include <setjmp.h>
#endif
#ifdef WIN32
#include <process.h>
#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"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
#include "inet_ntoa_r.h"
#endif
/* The last #include file should be: */
#ifdef CURLDEBUG
#include "memdebug.h"
#endif
/***********************************************************************
* Only for builds using asynchronous name resolves
**********************************************************************/
#ifdef CURLRES_ASYNCH
/*
* Curl_addrinfo_callback() gets called by ares/gethostbyname_thread() when we
* got the name resolved (or not!).
*
* If the status argument is CURL_ASYNC_SUCCESS, we might need to copy the
* address field since it might be freed when this function returns. This
* operation stores the resolved data in the DNS cache.
*
* NOTE: for IPv6 operations, Curl_addrinfo_copy() returns the same
* pointer it is given as argument!
*
* The storage operation locks and unlocks the DNS cache.
*/
void Curl_addrinfo_callback(void *arg, /* "struct connectdata *" */
int status,
Curl_addrinfo *hostent)
{
struct connectdata *conn = (struct connectdata *)arg;
struct Curl_dns_entry *dns = NULL;
conn->async.done = TRUE;
conn->async.status = status;
if(CURL_ASYNC_SUCCESS == status) {
/*
* IPv4: Curl_addrinfo_copy() copies the address and returns an allocated
* version.
*
* IPv6: Curl_addrinfo_copy() returns the input pointer!
*/
Curl_addrinfo *he = Curl_addrinfo_copy(hostent);
if(he) {
struct SessionHandle *data = conn->data;
if(data->share)
Curl_share_lock(data, CURL_LOCK_DATA_DNS, CURL_LOCK_ACCESS_SINGLE);
dns = Curl_cache_addr(data, he,
conn->async.hostname,
conn->async.port);
if(data->share)
Curl_share_unlock(data, CURL_LOCK_DATA_DNS);
}
}
conn->async.dns = dns;
/* ipv4: The input hostent struct will be freed by ares when we return from
this function */
}
#endif /* CURLRES_ASYNC */

1139
lib/hostip.c
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File diff suppressed because it is too large Load Diff

141
lib/hostip.h
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@ -51,20 +51,40 @@ struct Curl_dns_entry {
* The returned data *MUST* be "unlocked" with Curl_resolv_unlock() after
* use, or we'll leak memory!
*/
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);
CURLcode Curl_multi_ares_fdset(struct connectdata *conn,
fd_set *read_fd_set,
fd_set *write_fd_set,
int *max_fdp);
/* 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);
@ -81,19 +101,120 @@ curl_hash *Curl_mk_dnscache(void);
void Curl_hostcache_prune(struct SessionHandle *data);
#ifdef CURLDEBUG
void curl_freeaddrinfo(struct addrinfo *freethis,
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);
int curl_getaddrinfo(char *hostname, char *service,
struct addrinfo *hints,
struct addrinfo **result,
int line, const char *source);
#endif
/* This is the callback function that is used when we build with asynch
resolve */
void Curl_addrinfo_callback(void *arg,
int status,
Curl_addrinfo *hostent);
/* This is a utility-function for ipv4-builds to create a hostent struct
from a numerical-only IP address */
Curl_addrinfo *Curl_ip2addr(unsigned long num, char *hostname);
/* relocate a hostent struct */
void Curl_hostent_relocate(struct hostent *h, long offset);
/* copy a Curl_addrinfo struct, currently this only supports copying
a hostent (ipv4-style) struct */
Curl_addrinfo *Curl_addrinfo_copy(Curl_addrinfo *orig);
/*
* (IPv6) Curl_printable_address() returns a printable version of the
* ai->ai_addr address given in the 2nd argument. The first should be the
* ai->ai_family and the result will be stored in the buf that is bufsize
* bytes big.
*/
const char *Curl_printable_address(int af, void *addr,
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
/*
* 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
#define CURLRES_HOSTENT_RELOCATE
#endif
#endif /* IPv4-only */
#ifdef HAVE_GETHOSTBYNAME_R_6
#define CURLRES_HOSTENT_RELOCATE
#endif
#ifdef HAVE_GETHOSTBYNAME_R_5
#define CURLRES_HOSTENT_RELOCATE
#endif
#ifndef CURLRES_ASYNCH
#define CURLRES_SYNCH
#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
#endif

400
lib/hostip4.c Normal file
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@ -0,0 +1,400 @@
/***************************************************************************
* _ _ ____ _
* 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 <string.h>
#include <errno.h>
#define _REENTRANT
#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
#include <malloc.h>
#else
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#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
#endif
#ifdef HAVE_SETJMP_H
#include <setjmp.h>
#endif
#ifdef WIN32
#include <process.h>
#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"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
#include "inet_ntoa_r.h"
#endif
/* The last #include file should be: */
#ifdef CURLDEBUG
#include "memdebug.h"
#endif
/***********************************************************************
* Only for plain-ipv4 builds
**********************************************************************/
#ifdef CURLRES_IPV4 /* plain ipv4 code coming up */
/*
* This is a wrapper function for freeing name information in a protocol
* independent way. This takes care of using the appropriate underlying
* function.
*/
void Curl_freeaddrinfo(Curl_addrinfo *p)
{
free(p); /* works fine for the ARES case too */
}
/*
* 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)
{
if(data->set.ip_version == CURL_IPRESOLVE_V6)
/* an ipv6 address was requested and we can't get/use one */
return FALSE;
return TRUE; /* OK, proceed */
}
/*
* Curl_ip2addr() takes a 32bit ipv4 internet address as input parameter
* together with a pointer to the string version of the address, and it
* retruns a malloc()ed version of a hostent struct filled in correctly with
* information for this address/host.
*
* The input parameters ARE NOT checked for validity but they are expected
* to have been checked already when this is called.
*/
Curl_addrinfo *Curl_ip2addr(unsigned long num, char *hostname)
{
struct hostent *h;
struct in_addr *addrentry;
struct namebuf {
struct hostent hostentry;
char *h_addr_list[2];
struct in_addr addrentry;
char h_name[16]; /* 123.123.123.123 = 15 letters is maximum */
} *buf = (struct namebuf *)malloc(sizeof(struct namebuf));
if(!buf)
return NULL; /* major failure */
h = &buf->hostentry;
h->h_addr_list = &buf->h_addr_list[0];
addrentry = &buf->addrentry;
addrentry->s_addr = num;
h->h_addr_list[0] = (char*)addrentry;
h->h_addr_list[1] = NULL;
h->h_addrtype = AF_INET;
h->h_length = sizeof(*addrentry);
h->h_name = &buf->h_name[0];
h->h_aliases = NULL;
/* Now store the dotted version of the address */
snprintf(h->h_name, 16, "%s", hostname);
return h;
}
#ifdef CURLRES_SYNCH /* the functions below are for synchronous resolves */
/*
* Curl_getaddrinfo() - the ipv4 synchronous version.
*
* The original code to this function was once stolen from the Dancer source
* code, written by Bjorn Reese, it has since been patched and modified
* considerably.
*
* gethostbyname_r() is the thread-safe version of the gethostbyname()
* function. When we build for plain IPv4, we attempt to use this
* function. There are _three_ different gethostbyname_r() versions, and we
* detect which one this platform supports in the configure script and set up
* the HAVE_GETHOSTBYNAME_R_3, HAVE_GETHOSTBYNAME_R_5 or
* HAVE_GETHOSTBYNAME_R_6 defines accordingly. Note that HAVE_GETADDRBYNAME
* has the corresponding rules. This is primarily on *nix. Note that some unix
* flavours have thread-safe versions of the plain gethostbyname() etc.
*
*/
Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
char *hostname,
int port,
int *waitp)
{
struct hostent *h = NULL;
in_addr_t in;
struct SessionHandle *data = conn->data;
(void)port; /* unused in IPv4 code */
*waitp = 0; /* don't wait, we act synchronously */
in=inet_addr(hostname);
if (in != CURL_INADDR_NONE)
/* This is a dotted IP address 123.123.123.123-style */
return Curl_ip2addr(in, hostname);
#if defined(HAVE_GETHOSTBYNAME_R)
/*
* gethostbyname_r() is the preferred resolve function for many platforms.
* Since there are three different versions of it, the following code is
* somewhat #ifdef-ridden.
*/
else {
int h_errnop;
int res=ERANGE;
int step_size=200;
int *buf = (int *)calloc(CURL_HOSTENT_SIZE, 1);
if(!buf)
return NULL; /* major failure */
/*
* The clearing of the buffer is a workaround for a gethostbyname_r bug in
* qnx nto and it is also _required_ for some of these functions on some
* platforms.
*/
#ifdef HAVE_GETHOSTBYNAME_R_5
/* Solaris, IRIX and more */
(void)res; /* prevent compiler warning */
while(!h) {
h = gethostbyname_r(hostname,
(struct hostent *)buf,
(char *)buf + sizeof(struct hostent),
step_size - sizeof(struct hostent),
&h_errnop);
/* If the buffer is too small, it returns NULL and sets errno to
* ERANGE. The errno is thread safe if this is compiled with
* -D_REENTRANT as then the 'errno' variable is a macro defined to get
* used properly for threads.
*/
if(h || (errno != ERANGE))
break;
step_size+=200;
}
#ifdef CURLDEBUG
infof(data, "gethostbyname_r() uses %d bytes\n", step_size);
#endif
if(h) {
int offset;
h=(struct hostent *)realloc(buf, step_size);
offset=(long)h-(long)buf;
Curl_hostent_relocate(h, offset);
buf=(int *)h;
}
else
#endif /* HAVE_GETHOSTBYNAME_R_5 */
#ifdef HAVE_GETHOSTBYNAME_R_6
/* Linux */
do {
res=gethostbyname_r(hostname,
(struct hostent *)buf,
(char *)buf + sizeof(struct hostent),
step_size - sizeof(struct hostent),
&h, /* DIFFERENCE */
&h_errnop);
/* Redhat 8, using glibc 2.2.93 changed the behavior. Now all of a
* sudden this function returns EAGAIN if the given buffer size is too
* small. Previous versions are known to return ERANGE for the same
* problem.
*
* This wouldn't be such a big problem if older versions wouldn't
* sometimes return EAGAIN on a common failure case. Alas, we can't
* assume that EAGAIN *or* ERANGE means ERANGE for any given version of
* glibc.
*
* For now, we do that and thus we may call the function repeatedly and
* fail for older glibc versions that return EAGAIN, until we run out of
* buffer size (step_size grows beyond CURL_HOSTENT_SIZE).
*
* If anyone has a better fix, please tell us!
*
* -------------------------------------------------------------------
*
* On October 23rd 2003, Dan C dug up more details on the mysteries of
* gethostbyname_r() in glibc:
*
* In glibc 2.2.5 the interface is different (this has also been
* discovered in glibc 2.1.1-6 as shipped by Redhat 6). What I can't
* explain, is that tests performed on glibc 2.2.4-34 and 2.2.4-32
* (shipped/upgraded by Redhat 7.2) don't show this behavior!
*
* In this "buggy" version, the return code is -1 on error and 'errno'
* is set to the ERANGE or EAGAIN code. Note that 'errno' is not a
* thread-safe variable.
*/
if(((ERANGE == res) || (EAGAIN == res)) ||
((res<0) && ((ERANGE == errno) || (EAGAIN == errno))))
step_size+=200;
else
break;
} while(step_size <= CURL_HOSTENT_SIZE);
if(!h) /* failure */
res=1;
#ifdef CURLDEBUG
infof(data, "gethostbyname_r() uses %d bytes\n", step_size);
#endif
if(!res) {
int offset;
h=(struct hostent *)realloc(buf, step_size);
offset=(long)h-(long)buf;
Curl_hostent_relocate(h, offset);
buf=(int *)h;
}
else
#endif/* HAVE_GETHOSTBYNAME_R_6 */
#ifdef HAVE_GETHOSTBYNAME_R_3
/* AIX, Digital Unix/Tru64, HPUX 10, more? */
/* For AIX 4.3 or later, we don't use gethostbyname_r() at all, because of
* the plain fact that it does not return unique full buffers on each
* call, but instead several of the pointers in the hostent structs will
* point to the same actual data! This have the unfortunate down-side that
* our caching system breaks down horribly. Luckily for us though, AIX 4.3
* and more recent versions have a "completely thread-safe"[*] libc where
* all the data is stored in thread-specific memory areas making calls to
* the plain old gethostbyname() work fine even for multi-threaded
* programs.
*
* This AIX 4.3 or later detection is all made in the configure script.
*
* Troels Walsted Hansen helped us work this out on March 3rd, 2003.
*
* [*] = much later we've found out that it isn't at all "completely
* thread-safe", but at least the gethostbyname() function is.
*/
if(CURL_HOSTENT_SIZE >=
(sizeof(struct hostent)+sizeof(struct hostent_data))) {
/* August 22nd, 2000: Albert Chin-A-Young brought an updated version
* that should work! September 20: Richard Prescott worked on the buffer
* size dilemma.
*/
res = gethostbyname_r(hostname,
(struct hostent *)buf,
(struct hostent_data *)((char *)buf +
sizeof(struct hostent)));
h_errnop= errno; /* we don't deal with this, but set it anyway */
}
else
res = -1; /* failure, too smallish buffer size */
if(!res) { /* success */
h = (struct hostent*)buf; /* result expected in h */
/* This is the worst kind of the different gethostbyname_r() interfaces.
* Since we don't know how big buffer this particular lookup required,
* we can't realloc down the huge alloc without doing closer analysis of
* the returned data. Thus, we always use CURL_HOSTENT_SIZE for every
* name lookup. Fixing this would require an extra malloc() and then
* calling Curl_addrinfo_copy() that subsequent realloc()s down the new
* memory area to the actually used amount.
*/
}
else
#endif /* HAVE_GETHOSTBYNAME_R_3 */
{
infof(data, "gethostbyname_r(2) failed for %s\n", hostname);
h = NULL; /* set return code to NULL */
free(buf);
}
#else /* HAVE_GETHOSTBYNAME_R */
/*
* Here is code for platforms that don't have gethostbyname_r() or for
* which the gethostbyname() is the preferred() function.
*/
else {
h = gethostbyname(hostname);
if (!h)
infof(data, "gethostbyname(2) failed for %s\n", hostname);
else {
/*
* Copy the hostent struct right here, as the static one we got a
* pointer to might get removed when we don't want/expect that. Windows
* (other platforms?) also doesn't allow passing of the returned data
* between threads, which thus the copying here them allows the app to
* do.
*/
h = Curl_addrinfo_copy(h);
}
#endif /*HAVE_GETHOSTBYNAME_R */
}
return h;
}
#endif /* CURLRES_SYNCH */
#endif /* CURLRES_IPV4 */

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/***************************************************************************
* _ _ ____ _
* 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 <string.h>
#include <errno.h>
#define _REENTRANT
#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
#include <malloc.h>
#else
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#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
#endif
#ifdef HAVE_SETJMP_H
#include <setjmp.h>
#endif
#ifdef WIN32
#include <process.h>
#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 "inet_ntop.h"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
#include "inet_ntoa_r.h"
#endif
/* The last #include file should be: */
#ifdef CURLDEBUG
#include "memdebug.h"
#endif
/***********************************************************************
* Only for ipv6-enabled builds
**********************************************************************/
#ifdef CURLRES_IPV6
/*
* This is a wrapper function for freeing name information in a protocol
* independent way. This takes care of using the appropriate underlaying
* function.
*/
void Curl_freeaddrinfo(Curl_addrinfo *p)
{
freeaddrinfo(p);
}
/*
* Curl_printable_address() returns a printable version of the ai->ai_addr
* address given in the 2nd argument. The first should be the ai->ai_family
* and the result will be stored in the buf that is bufsize bytes big.
*
* If the conversion fails, it returns NULL.
*/
const char *Curl_printable_address(int af, void *addr,
char *buf, size_t bufsize)
{
const struct in_addr *addr4 =
&((const struct sockaddr_in*)addr)->sin_addr;
const struct in6_addr *addr6 =
&((const struct sockaddr_in6*)addr)->sin6_addr;
return Curl_inet_ntop(af, af == AF_INET6 ?
(const void *)addr6 :
(const void *)addr4, buf, bufsize);
}
#ifdef CURLRES_ASYNCH
/*
* Curl_addrinfo_copy() is used by the asynch callback to copy a given
* address. But this is an ipv6 build and then we don't copy the address, we
* just return the same pointer!
*/
Curl_addrinfo *Curl_addrinfo_copy(Curl_addrinfo *source)
{
return source;
}
#endif
#ifdef CURLDEBUG
/* These are strictly for memory tracing and are using the same style as the
* family otherwise present in memdebug.c. I put these ones here since they
* require a bunch of structs I didn't wanna include in memdebug.c
*/
int curl_dogetaddrinfo(char *hostname, char *service,
struct addrinfo *hints,
struct addrinfo **result,
int line, const char *source)
{
int res=(getaddrinfo)(hostname, service, hints, result);
if(0 == res) {
/* success */
if(logfile)
fprintf(logfile, "ADDR %s:%d getaddrinfo() = %p\n",
source, line, (void *)*result);
}
else {
if(logfile)
fprintf(logfile, "ADDR %s:%d getaddrinfo() failed\n",
source, line);
}
return res;
}
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)
{
int res=(getnameinfo)(sa, salen, host, hostlen, serv, servlen, flags);
if(0 == res) {
/* success */
if(logfile)
fprintf(logfile, "GETNAME %s:%d getnameinfo()\n",
source, line);
}
else {
if(logfile)
fprintf(logfile, "GETNAME %s:%d getnameinfo() failed = %d\n",
source, line, res);
}
return res;
}
void curl_dofreeaddrinfo(struct addrinfo *freethis,
int line, const char *source)
{
(freeaddrinfo)(freethis);
if(logfile)
fprintf(logfile, "ADDR %s:%d freeaddrinfo(%p)\n",
source, line, (void *)freethis);
}
#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)
{
if(data->set.ip_version == CURL_IPRESOLVE_V6) {
/* see if we have an IPv6 stack */
curl_socket_t s = socket(PF_INET6, SOCK_DGRAM, 0);
if (s < 0)
/* an ipv6 address was requested and we can't get/use one */
return FALSE;
sclose(s);
}
return TRUE;
}
#ifndef USE_THREADING_GETADDRINFO
/*
* Curl_getaddrinfo() when built ipv6-enabled (non-threading version).
*
* Returns name information about the given hostname and port number. If
* successful, the 'addrinfo' is returned and the forth argument will point to
* memory we need to free after use. That memory *MUST* be freed with
* Curl_freeaddrinfo(), nothing else.
*/
Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
char *hostname,
int port,
int *waitp)
{
struct addrinfo hints, *res;
int error;
char sbuf[NI_MAXSERV];
curl_socket_t s;
int pf;
struct SessionHandle *data = conn->data;
*waitp=0; /* don't wait, we have the response now */
/* see if we have an IPv6 stack */
s = socket(PF_INET6, SOCK_DGRAM, 0);
if (s < 0) {
/* 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);
/*
* Check if a more 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;
}
}
memset(&hints, 0, sizeof(hints));
hints.ai_family = pf;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_CANONNAME;
snprintf(sbuf, sizeof(sbuf), "%d", port);
error = getaddrinfo(hostname, sbuf, &hints, &res);
if (error) {
infof(data, "getaddrinfo(3) failed for %s:%d\n", hostname, port);
return NULL;
}
return res;
}
#endif /* USE_THREADING_GETADDRINFO */
#endif /* ipv6 */

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/***************************************************************************
* _ _ ____ _
* 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 <string.h>
#include <errno.h>
#define _REENTRANT
#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
#include <malloc.h>
#else
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#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
#endif
#ifdef HAVE_SETJMP_H
#include <setjmp.h>
#endif
#ifdef WIN32
#include <process.h>
#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"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
#include "inet_ntoa_r.h"
#endif
/* The last #include file should be: */
#ifdef CURLDEBUG
#include "memdebug.h"
#endif
/***********************************************************************
* Only for builds using synchronous name resolves
**********************************************************************/
#ifdef CURLRES_SYNCH
/*
* Curl_wait_for_resolv() for synch-builds. Curl_resolv() can never return
* wait==TRUE, so this function will never be called. If it still gets called,
* we return failure at once.
*
* We provide this function only to allow multi.c to remain unaware if we are
* doing asynch resolves or not.
*/
CURLcode Curl_wait_for_resolv(struct connectdata *conn,
struct Curl_dns_entry **entry)
{
(void)conn;
*entry=NULL;
return CURLE_COULDNT_RESOLVE_HOST;
}
/*
* This function will never be called when synch-built. If it still gets
* called, we return failure at once.
*
* We provide this function only to allow multi.c to remain unaware if we are
* doing asynch resolves or not.
*/
CURLcode Curl_is_resolved(struct connectdata *conn,
struct Curl_dns_entry **dns)
{
(void)conn;
*dns = NULL;
return CURLE_COULDNT_RESOLVE_HOST;
}
/*
* We just return OK, this function is never actually used for synch builds.
* It is present here to keep #ifdefs out from multi.c
*/
CURLcode Curl_fdset(struct connectdata *conn,
fd_set *read_fd_set,
fd_set *write_fd_set,
int *max_fdp)
{
(void)conn;
(void)read_fd_set;
(void)write_fd_set;
(void)max_fdp;
return CURLE_OK;
}
#endif /* truly sync */

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/***************************************************************************
* _ _ ____ _
* 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 <string.h>
#include <errno.h>
#define _REENTRANT
#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
#include <malloc.h>
#else
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#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
#endif
#ifdef HAVE_SETJMP_H
#include <setjmp.h>
#endif
#ifdef WIN32
#include <process.h>
#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"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
#include "inet_ntoa_r.h"
#endif
/* The last #include file should be: */
#ifdef CURLDEBUG
#include "memdebug.h"
#endif
/***********************************************************************
* Only for Windows 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 Curl_addrinfo *hints);
#ifdef CURLRES_IPV4
#define THREAD_FUNC gethostbyname_thread
#define THREAD_NAME "gethostbyname_thread"
#else
#define THREAD_FUNC getaddrinfo_thread
#define THREAD_NAME "getaddrinfo_thread"
#endif
#if defined(DEBUG_THREADING_GETHOSTBYNAME) || \
defined(DEBUG_THREADING_GETADDRINFO)
/* If this is defined, provide tracing */
#define TRACE(args) \
do { trace_it("%u: ", __LINE__); trace_it args; } while (0)
static void trace_it (const char *fmt, ...)
{
static int do_trace = -1;
va_list args;
if (do_trace == -1) {
const char *env = getenv("CURL_TRACE");
do_trace = (env && atoi(env) > 0);
}
if (!do_trace)
return;
va_start (args, fmt);
vfprintf (stderr, fmt, args);
fflush (stderr);
va_end (args);
}
#else
#define TRACE(x)
#endif
#ifdef DEBUG_THREADING_GETADDRINFO
/* inet_ntop.c */
extern const char *Curl_inet_ntop (int af, const void *addr, char *buf, size_t size);
static void dump_addrinfo (struct connectdata *conn, const struct addrinfo *ai)
{
TRACE(("dump_addrinfo:\n"));
for ( ; ai; ai = ai->ai_next) {
char buf [INET6_ADDRSTRLEN];
trace_it(" fam %2d, CNAME %s, ",
af, ai->ai_canonname ? ai->ai_canonname : "<none>");
if (Curl_printable_address(ai->ai_family, ai->ai_addr, buf, sizeof(buf)))
trace_it("%s\n", buf);
else
trace_it("failed; %s\n", Curl_strerror(conn,WSAGetLastError()));
}
}
#endif
struct thread_data {
HANDLE thread_hnd;
unsigned thread_id;
DWORD thread_status;
curl_socket_t dummy_sock; /* dummy for Curl_fdset() */
FILE *stderr_file;
#ifdef CURLRES_IPV6
struct addrinfo hints;
#endif
};
#if defined(CURLRES_IPV4)
/*
* gethostbyname_thread() resolves a name, calls the Curl_addrinfo_callback
* and then exits.
*
* For builds without ARES/ENABLE_IPV6, create a resolver thread and wait on
* it.
*/
static unsigned __stdcall gethostbyname_thread (void *arg)
{
struct connectdata *conn = (struct connectdata*) arg;
struct thread_data *td = (struct thread_data*) conn->async.os_specific;
struct hostent *he;
int rc;
/* Sharing the same _iob[] element with our parent thread should
* hopefully make printouts synchronised. I'm not sure it works
* with a static runtime lib (MSVC's libc.lib).
*/
*stderr = *td->stderr_file;
WSASetLastError (conn->async.status = NO_DATA); /* pending status */
he = gethostbyname (conn->async.hostname);
if (he) {
Curl_addrinfo_callback(conn, CURL_ASYNC_SUCCESS, he);
rc = 1;
}
else {
Curl_addrinfo_callback(conn, (int)WSAGetLastError(), NULL);
rc = 0;
}
TRACE(("Winsock-error %d, addr %s\n", conn->async.status,
he ? inet_ntoa(*(struct in_addr*)he->h_addr) : "unknown"));
return (rc);
/* An implicit _endthreadex() here */
}
#elif defined(CURLRES_IPV6)
/*
* getaddrinfo_thread() resolves a name, calls Curl_addrinfo_callback and then
* exits.
*
* For builds without ARES, but with ENABLE_IPV6, create a resolver thread
* and wait on it.
*/
static unsigned __stdcall getaddrinfo_thread (void *arg)
{
struct connectdata *conn = (struct connectdata*) arg;
struct thread_data *td = (struct thread_data*) conn->async.os_specific;
struct addrinfo *res;
char service [NI_MAXSERV];
int rc;
*stderr = *td->stderr_file;
itoa(conn->async.port, service, 10);
WSASetLastError(conn->async.status = NO_DATA); /* pending status */
rc = getaddrinfo(conn->async.hostname, service, &td->hints, &res);
if (rc == 0) {
#ifdef DEBUG_THREADING_GETADDRINFO
dump_addrinfo (conn, res);
#endif
Curl_addrinfo_callback(conn, CURL_ASYNC_SUCCESS, res);
}
else {
Curl_addrinfo_callback(conn, (int)WSAGetLastError(), NULL);
TRACE(("Winsock-error %d, no address\n", conn->async.status));
}
return (rc);
/* An implicit _endthreadex() here */
}
#endif
/*
* destroy_thread_data() cleans up async resolver data.
* Complementary of ares_destroy.
*/
static void destroy_thread_data (struct Curl_async *async)
{
if (async->hostname)
free(async->hostname);
if (async->os_specific) {
curl_socket_t sock = ((const struct thread_data*)async->os_specific)->dummy_sock;
if (sock != CURL_SOCKET_BAD)
sclose(sock);
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 Curl_addrinfo *hints)
{
struct thread_data *td = calloc(sizeof(*td), 1);
if (!td) {
SetLastError(ENOMEM);
return FALSE;
}
Curl_safefree(conn->async.hostname);
conn->async.hostname = strdup(hostname);
if (!conn->async.hostname) {
free(td);
SetLastError(ENOMEM);
return FALSE;
}
conn->async.port = port;
conn->async.done = FALSE;
conn->async.status = 0;
conn->async.dns = NULL;
conn->async.os_specific = (void*) td;
td->dummy_sock = CURL_SOCKET_BAD;
td->stderr_file = stderr;
td->thread_hnd = (HANDLE) _beginthreadex(NULL, 0, THREAD_FUNC,
conn, 0, &td->thread_id);
#ifdef CURLRES_IPV6
curlassert(hints);
td->hints = *hints;
#else
(void) hints;
#endif
if (!td->thread_hnd) {
SetLastError(errno);
TRACE(("_beginthreadex() failed; %s\n", Curl_strerror(conn,errno)));
destroy_thread_data(&conn->async);
return FALSE;
}
/* This socket is only to keep Curl_fdset() and select() happy; should never
* become signalled for read/write since it's unbound but Windows needs
* atleast 1 socket in select().
*/
td->dummy_sock = socket(AF_INET, SOCK_DGRAM, 0);
return TRUE;
}
/*
* 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;
long timeout;
DWORD status, ticks;
CURLcode rc;
curlassert (conn && td);
/* now, see if there's a connect timeout or a regular timeout to
use instead of the default one */
timeout =
conn->data->set.connecttimeout ? conn->data->set.connecttimeout :
conn->data->set.timeout ? conn->data->set.timeout :
CURL_TIMEOUT_RESOLVE; /* default name resolve timeout */
ticks = GetTickCount();
status = WaitForSingleObject(td->thread_hnd, 1000UL*timeout);
if (status == WAIT_OBJECT_0 || status == WAIT_ABANDONED) {
/* Thread finished before timeout; propagate Winsock error to this thread.
* 'conn->async.done = TRUE' is set in Curl_addrinfo_callback().
*/
WSASetLastError(conn->async.status);
GetExitCodeThread(td->thread_hnd, &td->thread_status);
TRACE(("%s() status %lu, thread retval %lu, ",
THREAD_NAME, status, td->thread_status));
}
else {
conn->async.done = TRUE;
td->thread_status = (DWORD)-1;
TRACE(("%s() timeout, ", THREAD_NAME));
}
TRACE(("elapsed %lu ms\n", GetTickCount()-ticks));
CloseHandle(td->thread_hnd);
if(entry)
*entry = conn->async.dns;
rc = CURLE_OK;
if (!conn->async.dns) {
/* a name was not resolved */
if (td->thread_status == (DWORD)-1 || conn->async.status == NO_DATA) {
failf(data, "Resolving host timed out: %s", conn->hostname);
rc = CURLE_OPERATION_TIMEDOUT;
}
else if(conn->async.done) {
failf(data, "Could not resolve host: %s; %s",
conn->hostname, Curl_strerror(conn,conn->async.status));
rc = CURLE_COULDNT_RESOLVE_HOST;
}
else
rc = CURLE_OPERATION_TIMEDOUT;
}
destroy_thread_data(&conn->async);
if(CURLE_OK != rc)
/* close the connection, since we must not return failure from here
without cleaning up this connection properly */
Curl_disconnect(conn);
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)
{
*entry = NULL;
if (conn->async.done) {
/* we're done */
destroy_thread_data(&conn->async);
if (!conn->async.dns) {
TRACE(("Curl_is_resolved(): CURLE_COULDNT_RESOLVE_HOST\n"));
return CURLE_COULDNT_RESOLVE_HOST;
}
*entry = conn->async.dns;
TRACE(("resolved okay, dns %p\n", *entry));
}
else
TRACE(("not yet\n"));
return CURLE_OK;
}
CURLcode Curl_fdset(struct connectdata *conn,
fd_set *read_fd_set,
fd_set *write_fd_set,
int *max_fdp)
{
const struct thread_data *td =
(const struct thread_data *) conn->async.os_specific;
if (td && td->dummy_sock != CURL_SOCKET_BAD) {
FD_SET(td->dummy_sock,write_fd_set);
*max_fdp = td->dummy_sock;
}
(void) read_fd_set;
return CURLE_OK;
}
#ifdef CURLRES_IPV4
/*
* Curl_getaddrinfo() - for Windows threading without ENABLE_IPV6.
*/
Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
char *hostname,
int port,
int *waitp)
{
struct hostent *h = NULL;
struct SessionHandle *data = conn->data;
in_addr_t in;
*waitp = 0; /* don't wait, we act synchronously */
in = inet_addr(hostname);
if (in != CURL_INADDR_NONE)
/* This is a dotted IP address 123.123.123.123-style */
return Curl_ip2addr(in, hostname);
/* fire up a new resolver thread! */
if (init_resolve_thread(conn, hostname, port, NULL)) {
*waitp = TRUE; /* please wait for the response */
return NULL;
}
/* fall-back to blocking version */
infof(data, "init_resolve_thread() failed for %s; code %lu\n",
hostname, GetLastError());
h = gethostbyname(hostname);
if (!h) {
infof(data, "gethostbyname(2) failed for %s:%d; %s\n",
hostname, port, Curl_strerror(conn,WSAGetLastError()));
return NULL;
}
return h;
}
#endif /* CURLRES_IPV4 */
#ifdef CURLRES_IPV6
/*
* Curl_getaddrinfo() - for Windows threading IPv6 enabled
*/
Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
char *hostname,
int port,
int *waitp)
{
struct addrinfo hints, *res;
int error;
char sbuf[NI_MAXSERV];
curl_socket_t s;
int pf;
struct SessionHandle *data = conn->data;
*waitp = FALSE; /* default to synch response */
/* see if we have an IPv6 stack */
s = socket(PF_INET6, SOCK_DGRAM, 0);
if (s < 0) {
/* 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);
/*
* Check if a more 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;
}
}
memset(&hints, 0, sizeof(hints));
hints.ai_family = pf;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_CANONNAME;
itoa(port, sbuf, 10);
/* fire up a new resolver thread! */
if (init_resolve_thread(conn, hostname, port, &hints)) {
*waitp = TRUE; /* please wait for the response */
return NULL;
}
/* fall-back to blocking version */
infof(data, "init_resolve_thread() failed for %s; code %lu\n",
hostname, GetLastError());
error = getaddrinfo(hostname, sbuf, &hints, &res);
if (error) {
infof(data, "getaddrinfo() failed for %s:%d; %s\n",
hostname, port, Curl_strerror(conn,WSAGetLastError()));
return NULL;
}
return res;
}
#endif /* CURLRES_IPV6 */
#endif /* CURLRES_THREADED */

189
lib/inet_ntop.c Normal file
View File

@ -0,0 +1,189 @@
/*
* Original code by Paul Vixie. "curlified" by Gisle Vanem.
*/
#include "setup.h"
#ifndef HAVE_INET_NTOP
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#include <string.h>
#include <errno.h>
#include "inet_ntop.h"
#define IN6ADDRSZ 16
#define INADDRSZ 4
#define INT16SZ 2
#ifdef WIN32
#define EAFNOSUPPORT WSAEAFNOSUPPORT
#define SET_ERRNO(e) WSASetLastError(errno = (e))
#else
#define SET_ERRNO(e) errno = e
#endif
/*
* Format an IPv4 address, more or less like inet_ntoa().
*
* Returns `dst' (as a const)
* Note:
* - uses no statics
* - takes a u_char* not an in_addr as input
*/
static const char *inet_ntop4 (const u_char *src, char *dst, size_t size)
{
#ifdef HAVE_INET_NTOA_R
return inet_ntoa_r(*(struct in_addr*)src, dst, size);
#else
const char *addr = inet_ntoa(*(struct in_addr*)src);
if (strlen(addr) >= size)
{
SET_ERRNO(ENOSPC);
return (NULL);
}
return strcpy(dst, addr);
#endif
}
#ifdef ENABLE_IPV6
/*
* Convert IPv6 binary address into presentation (printable) format.
*/
static const char *inet_ntop6 (const u_char *src, char *dst, size_t size)
{
/*
* Note that int32_t and int16_t need only be "at least" large enough
* to contain a value of the specified size. On some systems, like
* Crays, there is no such thing as an integer variable with 16 bits.
* Keep this in mind if you think this function should have been coded
* to use pointer overlays. All the world's not a VAX.
*/
char tmp [sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")];
char *tp;
struct {
long base;
long len;
} best, cur;
u_long words [IN6ADDRSZ / INT16SZ];
int i;
/* Preprocess:
* Copy the input (bytewise) array into a wordwise array.
* Find the longest run of 0x00's in src[] for :: shorthanding.
*/
memset(words, 0, sizeof(words));
for (i = 0; i < IN6ADDRSZ; i++)
words[i/2] |= (src[i] << ((1 - (i % 2)) << 3));
best.base = -1;
cur.base = -1;
for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++)
{
if (words[i] == 0)
{
if (cur.base == -1)
cur.base = i, cur.len = 1;
else
cur.len++;
}
else if (cur.base != -1)
{
if (best.base == -1 || cur.len > best.len)
best = cur;
cur.base = -1;
}
}
if ((cur.base != -1) && (best.base == -1 || cur.len > best.len))
best = cur;
if (best.base != -1 && best.len < 2)
best.base = -1;
/* Format the result.
*/
tp = tmp;
for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++)
{
/* Are we inside the best run of 0x00's?
*/
if (best.base != -1 && i >= best.base && i < (best.base + best.len))
{
if (i == best.base)
*tp++ = ':';
continue;
}
/* Are we following an initial run of 0x00s or any real hex?
*/
if (i != 0)
*tp++ = ':';
/* Is this address an encapsulated IPv4?
*/
if (i == 6 && best.base == 0 &&
(best.len == 6 || (best.len == 5 && words[5] == 0xffff)))
{
if (!inet_ntop4(src+12, tp, sizeof(tmp) - (tp - tmp)))
{
SET_ERRNO(ENOSPC);
return (NULL);
}
tp += strlen(tp);
break;
}
tp += sprintf (tp, "%lx", words[i]);
}
/* Was it a trailing run of 0x00's?
*/
if (best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ))
*tp++ = ':';
*tp++ = '\0';
/* Check for overflow, copy, and we're done.
*/
if ((size_t)(tp - tmp) > size)
{
SET_ERRNO(ENOSPC);
return (NULL);
}
return strcpy (dst, tmp);
}
#endif /* ENABLE_IPV6 */
/*
* Convert a network format address to presentation format.
*
* Returns pointer to presentation format address (`dst'),
* Returns NULL on error (see errno).
*/
const char *Curl_inet_ntop(int af, const void *src, char *buf, size_t size)
{
switch (af) {
case AF_INET:
return inet_ntop4((const u_char*)src, buf, size);
#ifdef ENABLE_IPV6
case AF_INET6:
return inet_ntop6((const u_char*)src, buf, size);
#endif
default:
SET_ERRNO(EAFNOSUPPORT);
return NULL;
}
}
#endif /* HAVE_INET_NTOP */

37
lib/inet_ntop.h Normal file
View File

@ -0,0 +1,37 @@
#ifndef __INET_NTOP_H
#define __INET_NTOP_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"
#ifdef HAVE_INET_NTOP
#define Curl_inet_ntop(af,addr,buf,size) inet_ntop(af,addr,buf,size)
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#else
const char *Curl_inet_ntop(int af, const void *addr, char *buf, size_t size);
#endif
#endif /* __INET_NTOP_H */

7
lib/memdebug.h
View File

@ -84,9 +84,12 @@ int curl_fclose(FILE *file, int line, const char *source);
curl_accept(sock,addr,len,__LINE__,__FILE__)
#define getaddrinfo(host,serv,hint,res) \
curl_getaddrinfo(host,serv,hint,res,__LINE__,__FILE__)
curl_dogetaddrinfo(host,serv,hint,res,__LINE__,__FILE__)
#define getnameinfo(sa,salen,host,hostlen,serv,servlen,flags) \
curl_dogetnameinfo(sa,salen,host,hostlen,serv,servlen,flags, __LINE__, \
__FILE__)
#define freeaddrinfo(data) \
curl_freeaddrinfo(data,__LINE__,__FILE__)
curl_dofreeaddrinfo(data,__LINE__,__FILE__)
/* sclose is probably already defined, redefine it! */
#undef sclose

5
lib/multi.c
View File

@ -251,8 +251,7 @@ CURLMcode curl_multi_fdset(CURLM *multi_handle,
break;
case CURLM_STATE_WAITRESOLVE:
/* waiting for a resolve to complete */
Curl_multi_ares_fdset(easy->easy_conn, read_fd_set, write_fd_set,
&this_max_fd);
Curl_fdset(easy->easy_conn, read_fd_set, write_fd_set, &this_max_fd);
if(this_max_fd > *max_fd)
*max_fd = this_max_fd;
break;
@ -413,7 +412,7 @@ CURLMcode curl_multi_perform(CURLM *multi_handle, int *running_handles)
easy->easy_conn->sock[FIRSTSOCKET],
&connected);
if(connected)
easy->result = Curl_protocol_connect(easy->easy_conn, NULL);
easy->result = Curl_protocol_connect(easy->easy_conn);
if(CURLE_OK != easy->result) {
/* failure detected */

12
lib/setup.h
View File

@ -261,9 +261,13 @@ typedef int curl_socket_t;
#error "ares does not yet support IPv6. Disable IPv6 or ares and rebuild"
#endif
#if defined(WIN32) && !defined(__CYGWIN32__) && !defined(USE_ARES) && !defined(ENABLE_IPV6)
#if defined(WIN32) && !defined(__CYGWIN__) && !defined(USE_ARES)
#ifdef ENABLE_IPV6
#define USE_THREADING_GETADDRINFO
#else
#define USE_THREADING_GETHOSTBYNAME /* Cygwin uses alarm() function */
#endif
#endif
/*
* Curl_addrinfo MUST be used for name resolving information.
@ -296,4 +300,10 @@ typedef struct in_addr Curl_ipconnect;
#undef HAVE_ALARM
#endif
#ifdef HAVE_LIBIDN
/* This could benefit from additional checks that some of the used/important
header files are present as well before we define the USE_* define. */
#define USE_LIBIDN
#endif
#endif /* __CONFIG_H */

130
lib/url.c
View File

@ -84,6 +84,11 @@
#endif
#ifdef USE_LIBIDN
#include <idna.h>
#include <stringprep.h>
#endif
#ifdef HAVE_OPENSSL_ENGINE_H
#include <openssl/engine.h>
#endif
@ -116,6 +121,7 @@
#include "ldap.h"
#include "url.h"
#include "connect.h"
#include "inet_ntop.h"
#include <ca-bundle.h>
#include <curl/types.h>
@ -145,6 +151,11 @@ static unsigned int ConnectionStore(struct SessionHandle *data,
struct connectdata *conn);
static bool safe_strequal(char* str1, char* str2);
#ifdef USE_LIBIDN
static bool is_ASCII_name (const char *hostname);
static bool is_ACE_name (const char *hostname);
#endif
#ifndef USE_ARES
/* not for Win32, unless it is cygwin
not for ares builds */
@ -1384,7 +1395,8 @@ CURLcode Curl_disconnect(struct connectdata *conn)
Curl_safefree(conn->allocptr.host);
Curl_safefree(conn->allocptr.cookiehost);
Curl_safefree(conn->proxyhost);
#if defined(USE_ARES) || defined(USE_THREADING_GETHOSTBYNAME)
#if defined(USE_ARES) || defined(USE_THREADING_GETHOSTBYNAME) || \
defined(USE_THREADING_GETADDRINFO)
/* possible left-overs from the async name resolve */
Curl_safefree(conn->async.hostname);
Curl_safefree(conn->async.os_specific);
@ -1875,64 +1887,26 @@ static CURLcode ConnectPlease(struct connectdata *conn,
}
/*
* ALERT! The 'dns' pointer being passed in here might be NULL at times.
* verboseconnect() displays verbose information after a connect
*/
static void verboseconnect(struct connectdata *conn,
struct Curl_dns_entry *dns)
static void verboseconnect(struct connectdata *conn)
{
struct SessionHandle *data = conn->data;
const char *host=NULL;
char addrbuf[NI_MAXHOST];
/* Figure out the ip-number and display the first host name it shows: */
/* Get a printable version of the network address. */
#ifdef ENABLE_IPV6
{
char hbuf[NI_MAXHOST];
#ifdef HAVE_NI_WITHSCOPEID
#define NIFLAGS NI_NUMERICHOST | NI_WITHSCOPEID
struct addrinfo *ai = conn->serv_addr;
host = Curl_printable_address(ai->ai_family, ai->ai_addr,
addrbuf, sizeof(addrbuf));
#else
#define NIFLAGS NI_NUMERICHOST
#endif
if(dns) {
struct addrinfo *ai = dns->addr;
/* Lookup the name of the given address. This should probably be remade
to use the DNS cache instead, as the host name is most likely cached
already. */
if (getnameinfo(ai->ai_addr, ai->ai_addrlen, hbuf, sizeof(hbuf), NULL, 0,
NIFLAGS)) {
snprintf(hbuf, sizeof(hbuf), "unknown");
}
else {
if (ai->ai_canonname) {
infof(data, "Connected to %s (%s) port %d\n", ai->ai_canonname, hbuf,
conn->port);
return;
}
}
}
else {
snprintf(hbuf, sizeof(hbuf), "same host");
}
infof(data, "Connected to %s port %d\n", hbuf, conn->port);
}
#else
{
#ifdef HAVE_INET_NTOA_R
char ntoa_buf[64];
#endif
Curl_addrinfo *hostaddr=dns?dns->addr:NULL;
struct in_addr in;
(void) memcpy(&in.s_addr, &conn->serv_addr.sin_addr, sizeof (in.s_addr));
infof(data, "Connected to %s (%s) port %d\n",
hostaddr?hostaddr->h_name:"",
#if defined(HAVE_INET_NTOA_R)
inet_ntoa_r(in, ntoa_buf, sizeof(ntoa_buf)),
#else
inet_ntoa(in),
#endif
conn->port);
}
struct in_addr in;
(void) memcpy(&in.s_addr, &conn->serv_addr.sin_addr, sizeof (in.s_addr));
host = Curl_inet_ntop(AF_INET, &in, addrbuf, sizeof(addrbuf));
#endif
infof(data, "Connected to %s (%s) port %d\n",
conn->hostname, host?host:"", conn->port);
}
/*
@ -1942,11 +1916,9 @@ static void verboseconnect(struct connectdata *conn,
* If we're using the multi interface, this host address pointer is most
* likely NULL at this point as we can't keep the resolved info around. This
* may call for some reworking, like a reference counter in the struct or
* something. The hostaddr is not used for very much though, we have the
* 'serv_addr' field in the connectdata struct for most of it.
* something.
*/
CURLcode Curl_protocol_connect(struct connectdata *conn,
struct Curl_dns_entry *hostaddr)
CURLcode Curl_protocol_connect(struct connectdata *conn)
{
struct SessionHandle *data = conn->data;
CURLcode result=CURLE_OK;
@ -1960,7 +1932,7 @@ CURLcode Curl_protocol_connect(struct connectdata *conn,
Curl_pgrsTime(data, TIMER_CONNECT); /* connect done */
if(data->set.verbose)
verboseconnect(conn, hostaddr);
verboseconnect(conn);
if(conn->curl_connect) {
/* is there a protocol-specific connect() procedure? */
@ -3173,6 +3145,26 @@ static CURLcode SetupConnection(struct connectdata *conn,
a file:// transfer */
return result;
#ifdef USE_LIBIDN
/*************************************************************
* Check name for non-ASCII and convert hostname to ACE form.
*************************************************************/
if(!conn->bits.reuse && conn->remote_port) {
const char *host = conn->hostname;
char *ace_hostname;
if (!is_ASCII_name(host) && !is_ACE_name(host)) {
int rc = idna_to_ascii_lz (host, &ace_hostname, 0);
if (rc == IDNA_SUCCESS)
conn->ace_hostname = ace_hostname;
else
infof(data, "Failed to convert %s to ACE; IDNA error %d\n", host, rc);
}
}
#endif
/*************************************************************
* Send user-agent to HTTP proxies even if the target protocol
* isn't HTTP.
@ -3202,7 +3194,7 @@ static CURLcode SetupConnection(struct connectdata *conn,
result = ConnectPlease(conn, hostaddr, &connected);
if(connected) {
result = Curl_protocol_connect(conn, hostaddr);
result = Curl_protocol_connect(conn);
if(CURLE_OK == result)
conn->bits.tcpconnect = TRUE;
}
@ -3217,7 +3209,7 @@ static CURLcode SetupConnection(struct connectdata *conn,
Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
conn->bits.tcpconnect = TRUE;
if(data->set.verbose)
verboseconnect(conn, hostaddr);
verboseconnect(conn);
}
conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
@ -3277,7 +3269,8 @@ CURLcode Curl_connect(struct SessionHandle *data,
then a successful name resolve has been received */
CURLcode Curl_async_resolved(struct connectdata *conn)
{
#if defined(USE_ARES) || defined(USE_THREADING_GETHOSTBYNAME)
#if defined(USE_ARES) || defined(USE_THREADING_GETHOSTBYNAME) || \
defined(USE_THREADING_GETADDRINFO)
CURLcode code = SetupConnection(conn, conn->async.dns);
if(code)
@ -3504,3 +3497,20 @@ void Curl_free_ssl_config(struct ssl_config_data* sslc)
if(sslc->random_file)
free(sslc->random_file);
}
/*
* Helpers for IDNA convertions. To do.
*/
#ifdef USE_LIBIDN
static bool is_ASCII_name (const char *hostname)
{
(void) hostname;
return (TRUE);
}
static bool is_ACE_name (const char *hostname)
{
(void) hostname;
return (FALSE);
}
#endif

3
lib/url.h
View File

@ -37,8 +37,7 @@ CURLcode Curl_do(struct connectdata **);
CURLcode Curl_do_more(struct connectdata *);
CURLcode Curl_done(struct connectdata *);
CURLcode Curl_disconnect(struct connectdata *);
CURLcode Curl_protocol_connect(struct connectdata *conn,
struct Curl_dns_entry *dns);
CURLcode Curl_protocol_connect(struct connectdata *conn);
bool Curl_ssl_config_matches(struct ssl_config_data* data,
struct ssl_config_data* needle);
bool Curl_clone_ssl_config(struct ssl_config_data* source,

17
lib/urldata.h
View File

@ -81,6 +81,10 @@
#include <zlib.h> /* for content-encoding */
#endif
#ifdef USE_ARES
#include <ares.h>
#endif
#include <curl/curl.h>
#include "http_chunks.h" /* for the structs and enum stuff */
@ -96,10 +100,6 @@
#endif
#endif
#ifdef USE_ARES
#include <ares.h>
#endif
/* Download buffer size, keep it fairly big for speed reasons */
#define BUFSIZE CURL_MAX_WRITE_SIZE
@ -381,7 +381,8 @@ struct Curl_transfer_keeper {
bool ignorebody; /* we read a response-body but we ignore it! */
};
#if defined(USE_ARES) || defined(USE_THREADING_GETHOSTBYNAME)
#if defined(USE_ARES) || defined(USE_THREADING_GETHOSTBYNAME) || \
defined(USE_THREADING_GETADDRINFO)
struct Curl_async {
char *hostname;
int port;
@ -430,6 +431,9 @@ struct connectdata {
char *namebuffer; /* allocated buffer to store the hostname in */
char *hostname; /* hostname to use, as parsed from url. points to
somewhere within the namebuffer[] area */
#ifdef USE_LIBIDN
char *ace_hostname; /* hostname possibly converted to ACE form */
#endif
char *pathbuffer;/* allocated buffer to store the URL's path part in */
char *path; /* path to use, points to somewhere within the pathbuffer
area */
@ -579,7 +583,8 @@ struct connectdata {
char syserr_buf [256]; /* buffer for Curl_strerror() */
#if defined(USE_ARES) || defined(USE_THREADING_GETHOSTBYNAME)
#if defined(USE_ARES) || defined(USE_THREADING_GETHOSTBYNAME) || \
defined(USE_THREADING_GETADDRINFO)
/* data used for the asynch name resolve callback */
struct Curl_async async;
#endif